What Size Ac System For 1800 Square Feet Foam House? Expert Guide & Tips
For a foam house measuring 1800 square feet, the recommended size for an AC system would depend on factors such as insulation, climate, and desired comfort level. It is recommended to consult with an HVAC professional who can assess these factors and provide an accurate recommendation for the appropriate size of the AC system for optimal cooling efficiency and comfort in the foam house.
Are you a homeowner looking to build or upgrade to a foam-insulated house of approximately 1800 square feet? If so, you’re likely seeking energy efficiency, home comfort, and cost-effectiveness. One crucial aspect of achieving these goals is finding the right size AC system for your foam house.
Proper cooling and energy efficiency are essential for a comfortable living environment and optimal energy consumption. However, determining the ideal AC system size for a foam-insulated house can be a daunting task.
In this blog article, we will delve into the world of HVAC systems and insulation to help you understand the key considerations in selecting an AC system for your 1800 square feet foam house. We will explore the challenges faced by homeowners like you and provide practical solutions to ensure you make an informed decision. From understanding the relationship between foam insulation and cooling requirements to evaluating the specific needs of your home, this article will equip you with the knowledge and insights to confidently choose the right AC system size.
So, if you’re ready to create a comfortable, energy-efficient oasis in your foam-insulated house, read on. Let’s explore the important factors that will enable you to make the best choice for cooling your 1800 square feet foam house.
- 【Efficient Cooling & Heating】 – Stay comfortable all year round with 12,000 BTU cooling and 12,500 BTU heating. The mini split AC unit is perfect for spaces up to 750 square feet, easily adjusting temperatures from 61°F (16°C) to 88°F (31°C). The advanced heat pump and technology inverter functionality enhances energy efficiency, ensuring you get the most out of your unit while maintaining the ideal temperature in every season.
- 【Energy-Saving Comfort】 – Enjoy year-round comfort with this split air conditioner, featuring SEER2 19 cooling efficiency and HSPF2 8.5 heating performance. It cuts energy use by up to 36% compared to traditional models, making it both eco-friendly and efficient. The ECO mode adjusts performance to reduce energy consumption, helping you stay comfortable while supporting a greener lifestyle.
- 【Effortless Smart Control】 – Easily adjust your room’s climate with the included remote control for temperature, fan speed, and mode, all without getting up. The 24-hour timer lets you set off times to fit your schedule. The clear LED display shows the status and can be turned off at night to avoid disruption. Enjoy a hassle-free experience with this mini split AC/heating system.
- 【Multiple Working Modes】 – This mini split AC/heating system offers ultimate flexibility with cooling, heating (operable in outdoor temperatures from 19.4°F to 75.2°F), fan, and dehumidifying modes. Choose from four fan speeds—high, medium, low, or auto—to create the perfect airflow. The up-and-down air swing distributes cool or warm air evenly throughout the room, reducing direct airflow discomfort. The built-in dehumidifying function helps maintain a fresh, dry, and comfortable indoor environment.
- 【Energy-Saving Comfort】 – Enjoy year-round comfort with this split air conditioner, featuring SEER2 19 cooling efficiency and HSPF2 8.5 heating performance. It cuts energy use by up to 36% compared to traditional models, making it both eco-friendly and efficient. The ECO mode adjusts performance to reduce energy consumption, helping you stay comfortable while supporting a greener lifestyle.
- Perfect for Multiple Rooms: Equipped with 1 outdoor 28,000BTU condenser and 3 indoor (9000BTU + 9000BTU +9000BTU) air handlers with individual controllers for each room. Our mini split air conditioning and heating system offers an all-season solution with air conditioning, powerful heat pump, dehumidifier, fan, and speed-up turbo function. Each room has individual temperature control for ideal climate control.
- Powerful Cooling and Heating: This ductless air conditioner comes with an inverter and heat pump system (up to -13℉~131℉ Ambicient temperature) for use in a variety of environments, this mini split air conditioner offers amazing performance without compromising on aesthetics. Auto defrost, self-diagnosis/cleaning, 24-hour timer, 4-way air swing, sleep mode, silent mode, etc.
- Advanced Air Conditioning Unit: The split air conditioner is equipped with innovative inverter technology at 20 SEER grade ensures optimal performance with 30% energy savings in every season; Perfect for home & business use like bedroom, living room, kitchen, rv, commercial spaces like stores, eateries, garage & warehouses.
- Remote & APP Enabled: Seamlessly integrates with mobile phone APP or voice control in addition to the remote control (works with Alexa/Assistant); Programs to set optimal temperature changes allow you to adjust your mini split air conditioner from anywhere so you can enjoy endless comfort as soon as you get home.
- What’s Inchluded:You will receive it pre-charged up to 26 ft System comes with 3 indoor units, 1 outdoor unit, 3 remote controls and 6 line set in 26 ft. Please remain upright for 24 hours before installation. Professional licensed HVAC technician installation recommended for optimal performance and safety (extra power cord is needed). Please schedule installation after receiving both 3 seperate boxes (delivery-time may vary).
- Powerful Cooling & Heating Performance: 9000 BTU cooling capacity efficiently cools spaces up to 500 square feet (ideal for bedrooms, living rooms, home offices), while the built-in heating function maintains comfortable temperatures year-round—perfect for U.S. climates from hot summers to cool winters.
- 115V Standard Voltage & Energy Savings: Designed for U.S. households with 115V standard outlets (no need for high-voltage wiring), this ductless mini-split AC meets ENERGY STAR guidelines, reducing energy bills by up to 36% compared to traditional window units.
- Quiet Operation & Smart Control: Indoor unit operates at only 25-35 dB (quieter than a library), ensuring undisturbed sleep, work, or relaxation. The included remote control lets you adjust temperature, fan speed, and mode (cool, heat, fan, dry) from across the room; supports 24-hour timer for customized comfort.
- Self-Cleaning & Auto Defrost for Zero Maintenance：Breathe easier with our Auto Self-Clean technology that intelligently prevents odors, ensuring healthy air quality. The washable filter is easily rinsed. Never worry about winter breakdowns; the Auto Defrost function ensures reliable heating even in freezing temperatures as low as -4°F (-20°C).
- AHRI-Certified & Eco-Friendly R32 Refrigerant: Rest assured with official AHRI certification, guaranteeing rated performance and efficiency. Filled with environmentally advanced R32 refrigerant, this system provides superior cooling and heating while reducing ecological impact. The precision inverter compressor ensures durable, long-lasting operation and maintains set temperatures within 1°F.
- Perfect for Multiple Rooms: Equipped with 1 outdoor 20,000BTU condenser and 2 indoor (12000BTU + 12000BTU) air handlers with individual controllers for each room. Our mini split air conditioning and heating system offers an all-season solution with air conditioning, powerful heat pump, dehumidifier, fan, and speed-up turbo function. Each room has individual temperature control for ideal climate control.
- Powerful Cooling and Heating: This ductless air conditioner comes with an inverter and heat pump system (up to -13℉~131℉ Ambicient temperature) for use in a variety of environments, this mini split air conditioner offers amazing performance without compromising on aesthetics. Auto defrost, self-diagnosis/cleaning, 24-hour timer, 4-way air swing, sleep mode, silent mode, etc.
- Advanced Air Conditioning Unit: The split air conditioner is equipped with innovative inverter technology at 20 SEER grade ensures optimal performance with 30% energy savings in every season; Perfect for home & business use like bedroom, living room, kitchen, rv, commercial spaces like stores, eateries, garage & warehouses.
- Remote & APP Enabled: Seamlessly integrates with mobile phone APP or voice control in addition to the remote control (works with Alexa/Assistant); Programs to set optimal temperature changes allow you to adjust your mini split air conditioner from anywhere so you can enjoy endless comfort as soon as you get home.
- What’s Inchluded:You will receive it pre-charged up to 26 ft System comes with 2 indoor units, 1 outdoor unit, 2 remote controls and 4 line set in 26 ft. Please remain upright for 24 hours before installation. Professional licensed HVAC technician installation recommended for optimal performance and safety (extra power cord is needed). Please schedule installation after receiving both 3 seperate boxes (delivery-time may vary)
- All-Season Comfort for Any Space: Designed by EXNOS, this ductless mini split air conditioner and heat pump system delivers reliable year-round comfort. Powered by a high-efficiency inverter compressor, it offers 20 SEER2 efficiency, outperforming standard 17 SEER2 systems. With 12,000 BTU cooling and heating capacity, it’s ideal for spaces up to 750 sq ft, including bedrooms, living rooms, garages, basements, RVs, and light commercial areas. Unlike window or portable air conditioners, this system provides true cooling and heating without blocking windows, reducing noise and delivering a cleaner, more stable comfort solution for everyday use
- Smart Wi-Fi Control Anytime, Anywhere: Control your comfort with built-in Wi-Fi connectivity and convenient app access using this EXNOS smart mini split air conditioner. Easily adjust temperatures, change operating modes, and set custom routines from anywhere to match your daily schedule. A full-feature remote control with a clear digital display is also included for easy in-room operation
- Reliable Performance in Extreme Conditions: Powered by eco-friendly R454B refrigerant, this EXNOS ductless mini split system is designed for reliable operation across a wide range of environments. ETL certified for safety and reliability, it supports stable performance in outdoor temperatures from -13°F to 122°F, making it suitable for both colder and hotter climates. Engineered for consistent operation under demanding conditions, it helps maintain dependable cooling and heating as environmental temperatures vary
- Multiple Comfort Modes for Everyday Use: The EXNOS mini split system integrates Auto, cooling, heating, dehumidification, and fan-only modes, and supports self-cleaning and a health mode function. The fan-only mode offers 7 airflow settings with directional airflow control for more even air distribution. Additional features include auto defrost, a 24-hour timer, Turbo mode, iFEEL temperature sensing, sleep mode, silent operation, remote temperature memory, child lock, and eco mode, helping balance comfort and energy efficiency
- Generator-Powered Operation: Supports connection to a compatible external generator, allowing the EXNOS ductless mini split air conditioner to continue providing cooling or heating during power outages. Ideal for emergency backup use or remote locations. Proper generator capacity is required, and professional setup is recommended
- Energy Efficient Cooling & Heating: The mini split air conditioner is equipped with a high-power compressor and heat pump; Innovative inverter technology ensures optimal performance with 25% energy savings; Covers 750 square feet, ideal for bedrooms, living rooms, garages, RVs, basements, commercial applications, and more; Our mini split AC is ETL and AHRI certified, guaranteeing reliability and energy efficiency
- Five Modes: YITAHOME 12000 btu mini split air conditioner and heater units offer five modes (auto/cool/dry/heat/fan); WiFi-enabled and Alexa-compatible; Automatic defrosting, self-diagnosis/cleaning, iFEEL mode, 24-hour timer, sleep mode, energy-saving mode, “HEALTH” mode (negative ions, electrostatic dust removal, and PM2.5 removal)
- Silent Performance: The ductless air conditioner operates quietly, creating minimal noise during operation; The remote control allows you to set the temperature between 60℉ and 90℉; With noise levels below 41 decibels, you can enjoy a tranquil and undisturbed environment while benefiting from the efficient cooling and heating capabilities of our system
- All-Weather Response: The mini split ac/heating system is designed to perform in various environments, including in temperatures as low as 5°F and as high as 118°F; Providing optimal performance in every season, reaching a maximum airflow distance of 50 feet, creating a 4D air circulation within the room
- Installation Package: Our ac mini split system comes with an indoor unit, outdoor unit, multifunctional remote control, and comprehensive installation kit (excluding shut-off valves cover and side protection grille); While the air filter is washable and easy to clean; The installation of this system should be done only by licensed HVAC installers. Note: Ships in 2 packages, may arrive separately
- All-Season Comfort for Any Space: Designed by EXNOS, this ductless mini split air conditioner and heat pump system delivers reliable year-round comfort. Powered by a high-efficiency inverter compressor, it offers 20 SEER2 efficiency, outperforming standard 17 SEER2 systems. With 12,000 BTU cooling and heating capacity, it’s ideal for spaces up to 750 sq ft, including bedrooms, living rooms, garages, basements, RVs, and light commercial areas. Unlike window or portable air conditioners, this system provides true cooling and heating without blocking windows, reducing noise and delivering a cleaner, more stable comfort solution for everyday use
- Smart Wi-Fi Control Anytime, Anywhere: Control your comfort with built-in Wi-Fi connectivity and convenient app access using this EXNOS smart mini split air conditioner. Easily adjust temperatures, change operating modes, and set custom routines from anywhere to match your daily schedule. A full-feature remote control with a clear digital display is also included for easy in-room operation
- Reliable Performance in Extreme Conditions: Powered by eco-friendly R454B refrigerant, this EXNOS ductless mini split system is designed for reliable operation across a wide range of environments. ETL certified for safety and reliability, it supports stable performance in outdoor temperatures from -13°F to 122°F, making it suitable for both colder and hotter climates. Engineered for consistent operation under demanding conditions, it helps maintain dependable cooling and heating as environmental temperatures vary
- Multiple Comfort Modes for Everyday Use: The EXNOS mini split system integrates Auto, cooling, heating, dehumidification, and fan-only modes, and supports self-cleaning and a health mode function. The fan-only mode offers 7 airflow settings with directional airflow control for more even air distribution. Additional features include auto defrost, a 24-hour timer, Turbo mode, iFEEL temperature sensing, sleep mode, silent operation, remote temperature memory, child lock, and eco mode, helping balance comfort and energy efficiency
- Generator-Powered Operation: Supports connection to a compatible external generator, allowing the EXNOS ductless mini split air conditioner to continue providing cooling or heating during power outages. Ideal for emergency backup use or remote locations. Proper generator capacity is required, and professional setup is recommended
- All-in-one for Multiple Rooms: Equipped with 1 outdoor 20,000BTU condenser and 2 indoor (9,000BTU + 12,000BTU) air handlers with individual controllers for each room. Our mini split air conditioning and heating system offers an all-season solution with air conditioning, powerful heat pump, dehumidifier, fan, and speed-up turbo function. Each room has individual temperature control for ideal climate control
- Powerful Cooling and Heating: This ductless air conditioner comes with an inverter and heat pump system (up to -13℉~131℉ Ambicient temperature) for use in a variety of environments, this mini split air conditioner offers amazing performance without compromising on aesthetics. Auto defrost, self-diagnosis/cleaning, iFEEL mode, 24-hour timer, 4-way air swing, sleep mode, silent mode, etc.
- Advanced Energy-saving Air Conditioning Unit: The split air conditioner is equipped with innovative inverter technology at 23 SEER grade ensures optimal performance with 30% energy savings in every season; And it is ETL and AHRI certified, guaranteeing reliability of electrical bill saving. Perfect for home & business use like bedroom, living room, kitchen, rv, commercial spaces like stores, eateries, garage & warehouses
- Remote, APP & Voice Control Enabled: Seamlessly integrates with mobile phone APP or voice control in addition to the remote control (works with Alexa/Google Assistant); Programs to set optimal temperature changes allow you to adjust your mini split air conditioner from anywhere so you can enjoy endless comfort as soon as you get home
- 100% Satisfaction: Pre-charged up to 25 feet System comes with 2 indoor units, 1 outdoor unit, 2 remote controls and 2 line set in 25ft. Please remain upright for 24 hours before installation. Professional licensed HVAC technician installation recommended for optimal performance and safety (extra power cord is needed). Please schedule installation after receiving both 5 seperate boxes (receiving-time may vary)
- [AMPLE COVERAGE] This unit provides cooling and heating for up to 1000 square feet and is able to work in environments as low as 19 degrees Fahrenheit. Filled with the new R32 refrigerant, ensures the best air quality both indoors and outdoors. Competitors use an older refrigerant that is more harmful to the environment. If additional refrigerant needs to be added to the lines, check R32 availability at your local seller.
- [STRONG SYSTEM] This split air conditioner is designed with several smart functions that make it easy to use: 4D air flow(up-down left-right), I feel mode, 24 hour timer, sleep mode, eco energy saving mode, multiple fan speeds, turbo function, heating, cooling, dry modes for dehumidifying. Maximum Fuse Size is 15A.
- [SMART SENSOR & INSTALLATION] The unit will sense room temperature at the remote control, instead of at the indoor unit during cooling mode. It then adjusts airflow and temperature accordingly, resulting in the ultimate in personal comfort control and energy savings.Line-set vacuuming is required during installation. Any alteration of line-set length requires adjusting freon levels.This system mandates professional installation – it’s not a DIY mini split AC.
- [ENERGY EFFICIENT COOLING] This 18000 BTU/h, 19 SEER2, 208-230V, ETL Listed, AHRI Certified pre-charged air conditioner unit features a ductless mini split inverter plus system with a heat pump (up to 19℉/ -7℃) and DC Inverter technology provides up to 30% power savings.
- [QUIET OPERATION] This air conditioner is ultra silent at only 47 dBa. The unit provides equal airflow in every part of your room and can adjust to 60-90 degrees Fahrenheit to suit your comforts in just a few minutes. 13ft copper line length (Standard size 1/4″ & 1/2″ outer dimension copper pipes) and full installation kit included. The length for drain pipe is 78.7″.
- 【Powerful 18000 BTU Cooling & Heating】 – Experience year-round comfort with this high-performance 18,000 BTU mini split air conditioner and heat pump. Suitable for rooms up to 1250 sq. ft., it maintains indoor temperatures from 61°F to 88°F with inverter technology and a reliable heat pump system, ideal for bedrooms, living rooms, offices, and workshops.
- 【Energy-Efficient Comfort】 — This 18000 BTU mini split AC/heating system delivers year-round comfort while saving up to 36% on energy costs. With SEER2 19 cooling, HSPF2 8.5 heating, and smart ECO mode that adjusts to your room’s temperature, it keeps you cozy and your bills low.
- 【Smart & Convenient Operation】- With this mini split, you can easily control settings using the included remote. Adjust temperature, fan speed, and mode right from your seat. The 24-hour timer allows you to set automatic shut-off to fit your daily routine. The clear LED display shows system status and can be turned off at night to ensure peaceful, undisturbed sleep.
- 【4-in-1 Functionality for All Seasons】 – This mini split ac includes cooling, heating, fan-only, and dry modes. Choose from four fan speeds or auto mode for customized comfort. Adjustable air swing ensures air is evenly circulated throughout the room for a consistently comfortable environment.
- 【Quiet Operation & Sleep Mode】 – Operating at a whisper-quiet 46dB, this split ac unit is perfect for nighttime use. The sleep mode gently adjusts the temperature throughout the night, helping you stay comfortable and wake up feeling refreshed.
Understanding Foam Insulation and Its Impact on Cooling
Before delving into the details of selecting the right AC system size for your 1800 square feet foam house, it’s crucial to understand the role of foam insulation and its impact on cooling.
Foam insulation is known for its excellent thermal performance and energy efficiency. It creates an airtight seal, preventing air leakage and heat transfer, resulting in reduced energy consumption and lower utility bills.
When it comes to cooling your foam-insulated house, the insulation plays a vital role in maintaining a consistent indoor temperature. It keeps the cool air trapped inside during hot weather and prevents the entry of warm air from outside. As a result, your AC system doesn’t have to work as hard to maintain the desired temperature, leading to energy savings and improved comfort.
However, it’s important to note that the insulating properties of foam can also impact the cooling load calculation, which determines the size of the AC system you need. Let’s explore this further.
The Importance of Proper Cooling Load Calculation
Calculating the cooling load is a crucial step in determining the right AC system size for your foam-insulated house. This process involves evaluating various factors that contribute to the heat gain inside your home.
In a conventional house, the cooling load calculation includes factors like insulation levels, air leakage, orientation, and others. However, when it comes to a foam-insulated house, additional considerations need to be taken into account.
Since foam insulation minimizes air leakage, the cooling load calculation should focus on factors such as solar heat gain, internal heat sources (like appliances and lighting), and the number of occupants in the house. These factors become even more critical as they contribute significantly to the overall heat gain in a foam-insulated house.
By accurately calculating the cooling load, you can ensure the AC system’s size matches your home’s specific requirements. An undersized AC system may struggle to cool your home adequately, leading to discomfort during hot weather. On the other hand, an oversized AC system can result in frequent short cycling and inefficient operation, wasting energy and increasing your utility bills.
The Role of Square Footage in Selecting the Right AC Size
When it comes to selecting the right AC system size, the square footage of your foam house is an essential consideration. However, it’s not the sole determining factor.
The industry standard for AC sizing is to calculate the cooling load in British Thermal Units (BTUs) per hour and match it to the AC system’s capacity. Typically, one ton of cooling capacity is equal to 12,000 BTUs per hour.
For an 1800 square feet foam house, the cooling load calculation would take into account the factors mentioned earlier, such as solar heat gain and internal heat sources. By considering these factors along with the square footage, you can determine the appropriate AC system size.
Working with HVAC Professionals
While understanding the basics of foam insulation and cooling load calculation is essential, it’s highly recommended to work with HVAC professionals to ensure accurate sizing and installation of your AC system.
Experienced HVAC contractors have the expertise and knowledge to perform a detailed cooling load calculation specific to your foam-insulated house. They will consider various factors and use advanced software tools to determine the optimal AC system size.
By relying on professionals, you can avoid the pitfalls of DIY sizing and ensure your AC system operates efficiently, providing you with the desired comfort and energy savings.
The Impact of Energy Efficiency Ratings
When selecting an AC system for your foam house, it’s crucial to consider energy efficiency ratings, such as Seasonal Energy Efficiency Ratio (SEER) and Energy Efficiency Ratio (EER).
SEER represents the cooling output of an AC system divided by the energy it consumes over a typical cooling season. Higher SEER ratings indicate better energy efficiency, which can result in significant cost savings over the system’s lifespan.
EER, on the other hand, represents the cooling output of an AC system divided by the energy it consumes at a specific operating condition. While SEER reflects overall energy efficiency, EER provides insight into the system’s efficiency at a given moment. Higher EER ratings are desirable for improved performance during hot weather.
When evaluating AC systems, look for models with higher SEER and EER ratings to maximize energy savings and comfort in your foam-insulated house.
Choosing the right AC system size for your 1800 square feet foam house is crucial to achieve optimal comfort and energy efficiency. The insulation properties of foam play a significant role in maintaining consistent temperatures and reducing cooling loads.
By considering factors such as solar heat gain, internal heat sources, and energy efficiency ratings, along with the square footage, you can make an informed decision. Working with HVAC professionals ensures accurate sizing and installation, avoiding the pitfalls of DIY calculations.
Now that you have a better understanding of selecting the right AC system size for your foam-insulated house, you can create a comfortable and energy-efficient environment that you’ll enjoy for years to come.
Before you buy, know the right AC square footage per ton!
Frequently Asked Questions (FAQ)
What size AC system do I need for a 1800 square feet foam house?
Is a single AC unit sufficient for cooling a 1800 square feet foam house?
What factors should I consider when choosing the size of the AC system for a 1800 square feet foam house?
What is the average BTU requirement for cooling a 1800 square feet foam house?
Can I install a larger AC system for better cooling in my 1800 square feet foam house?
Final Summary: Selecting the Right AC System Size for Foam Insulated Houses
In conclusion, understanding the role of foam insulation and its impact on cooling is essential when selecting the right AC system size for a 1800 square feet foam house. Foam insulation creates an airtight seal, reducing energy consumption and maintaining a consistent indoor temperature.
However, it also affects the cooling load calculation, which determines the AC system size needed. Factors such as solar heat gain, internal heat sources, and the number of occupants should be considered in addition to the square footage of the house.
Working with HVAC professionals is highly recommended to ensure accurate sizing and installation of the AC system. Energy efficiency ratings, such as SEER and EER, should also be taken into account when selecting an AC system. Higher ratings indicate better energy efficiency and can lead to significant cost savings over the lifespan of the system.
By considering all these factors and working with professionals, homeowners can create a comfortable and energy-efficient environment in their foam-insulated houses. It is important to make informed decisions to optimize comfort and energy savings. With the right AC system size and proper installation, homeowners can enjoy a comfortable living space for years to come.
