Basements need units that handle cooler, damper spaces in summer and deliver reliable supplemental heat in shoulder seasons. The table below summarizes five top units suited for basement use across sizes and installation types. Choose based on room size, installation constraints, and whether you prefer ductless cooling, a window unit, or a portable solution.
| Product | Type | Coverage | Heating |
|---|---|---|---|
| LG 18,000 BTU Window Air Conditioner With Heat | Window Unit | Up To 1,000 Sq. Ft. | Supplemental Heat (230/208V) |
| YITAHOME 12,000 BTU Mini Split Air Conditioner Heat Pump | Ductless Mini Split | Up To 750 Sq. Ft. | Heat Pump (Full Heating) |
| COSTWAY 12,000 BTU Mini Split Air Conditioner & Heater | Ductless Mini Split | Up To 750 Sq. Ft. | Heat Pump (Full Heating) |
| Uhome 12,000 BTU Portable Air Conditioner With Heater | Portable A/C | Up To 400 Sq. Ft. | Built-In Electric Heater |
| GE AWGP08WWA 8,000 BTU Smart Heat/Cool Window Air Conditioner | Window Unit | Up To 350 Sq. Ft. | Heat Pump Supplement |
Content Navigation
- LG 18,000 BTU Window Air Conditioner With Heat
- YITAHOME 12000 BTU Mini Split Air Conditioner Heat Pump System
- COSTWAY 12000BTU Mini Split Air Conditioner & Heater
- Uhome 12000 BTU Portable Air Conditioner With Heater
- GE AWGP08WWA 8,000 BTU Smart Heat/Cool Window Air Conditioner
- Buying Guide: Choosing The Right Basement Air Conditioner And Heater
LG 18,000 BTU Window Air Conditioner With Heat
This LG window unit combines high cooling capacity with a supplemental heat option, designed for large basement areas. It requires a 230/208V LCDI (NEMA 6-20) plug, so electrical compatibility is essential. The unit offers two cooling and heating speeds and a 4-way air deflection for flexible airflow direction in irregular basement layouts.
Controls include a digital panel, remote, a 24-hour timer, and a filter reminder. Installation kit and a removable washable filter are included, supporting regular maintenance. For basements needing strong airflow and seasonal supplemental heat without full HVAC changes, this model offers robust cooling coverage and added warmth when outdoor temps moderate.
YITAHOME 12000 BTU Mini Split Air Conditioner Heat Pump System
The YITAHOME mini split is a ductless heat pump solution suited for finished basements and large open plans up to about 750 sq. ft. Inverter technology and a high SEER2 rating target energy-efficient cooling and heating, with manufacturer claims of ~25% energy savings compared to older models.
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Key features include Wi‑Fi and Alexa compatibility, five operating modes (auto/cool/dry/heat/fan), automatic defrost, and low noise operation (~41 dB). The unit’s silent performance and multi-mode functionality make it appropriate where quiet background operation and year-round climate control are priorities. A complete installation kit is provided, but professional install is recommended for refrigerant lines and wall mounting.
COSTWAY 12000BTU Mini Split Air Conditioner & Heater
The COSTWAY Blast Series mini split offers inverter-driven performance for heating and cooling up to 750 sq. ft. It includes five modes, multiple fan speeds, ECO and sleep modes, and iFEEL and turbo functions for faster conditioning. The inverter design reduces frequent compressor cycling to improve efficiency and longevity.
Control options include a remote and programmable timer. The unit emphasizes quiet operation and energy efficiency compliant with current SEER2 expectations. As with other mini splits, a professional installer is usually required to handle line sets and wall penetrations, but the result is a ductless, space-saving solution that provides balanced basement heating and cooling year-round.
Uhome 12000 BTU Portable Air Conditioner With Heater
The Uhome portable unit offers a 4-in-1 design (cool/heat/dehumidify/fan) for up to 400 sq. ft. It uses a self-evaporating system to reduce condensate maintenance and claims low noise (~52 dB) for portable operation. The unit includes a remote, LED display, 24-hour programmable timer, and three fan speeds.
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Portable ACs are attractive for basements without window or wall access for permanent equipment. This model’s heating and cooling dual function offers seasonal flexibility, though portable units typically deliver lower overall efficiency than heat pumps or mini splits. The included window kit simplifies short-term installation through basement egress windows or other openings.
GE AWGP08WWA 8,000 BTU Smart Heat/Cool Window Air Conditioner
The GE AWGP08WWA is a smart window heat/cool unit sized for medium basements up to 350 sq. ft. It features a heat pump heat option, an 8,000 BTU cooling capacity, and Wi‑Fi control through the SmartHQ app for scheduling and remote monitoring.
Manufacturer notes the unit’s improved heating efficiency relative to traditional resistive heaters and emphasizes convenience features like remote control, simple installation kit, and suitability for bedrooms and living areas. Its smart connectivity and compact footprint make it a fit for finished basements where window mounting is possible and app control is desired.
Buying Guide: Choosing The Right Basement Air Conditioner And Heater
Basements present unique environmental and installation challenges. Use these considerations to match a unit to your space and goals.
Room Size And BTU Capacity
- Measure the conditioned floor area and ceiling height. Larger basements or open plans need higher BTU ratings or multiple units.
- Approximate guidance: Up to 350 sq. ft. — 8,000–10,000 BTU; 350–750 sq. ft. — 10,000–12,000+ BTU; 750–1,000+ sq. ft. — 12,000–18,000+ BTU or ducted/mini split setups.
Type Of System
- Mini Split Heat Pump — Best energy efficiency and year-round heating/cooling; requires wall penetrations and professional installation but offers quiet operation and precise control.
- Window Heat/Cool Unit — Mid-cost, straightforward for basements with egress windows; good cooling power and reasonable heating for moderate conditions.
- Portable Units — Flexible and no permanent installation; suitable for rental situations or temporary use but typically less efficient and louder.
Heating Performance And Limits
- Heat Pump vs. Resistive Heat: Heat pumps are more energy efficient for colder-but-not-freezing climates and provide both heating and cooling. Resistive heaters (electric) provide reliable supplemental heat but at higher operating cost.
- Check the manufacturer’s stated operating temperature range—some heat pumps lose heating capacity below certain outdoor temps or recommend supplemental heat below ~41°F.
Moisture And Dehumidification
- Basements are often more humid. Choose units with strong dehumidification capability or run a dedicated dehumidifier. Many modern units include a dry mode or integrated dehumidifier.
- Self-evaporating designs reduce condensate maintenance for portable units.
Installation Constraints
- Window or wall access: Window and portable units need a suitable window or outlet path. Mini splits and wall-mounted units require a small hole for refrigerant lines and a qualified installer.
- Electrical supply: Larger window units (like 18,000 BTU) may require a 230/208V circuit and a specific plug. Verify breaker capacity and outlet type prior to purchase.
Noise And Location
- Basements often serve as living or media spaces—check decibel ratings. Mini splits typically operate quieter than portable and window units.
- Consider equipment placement to avoid directing airflow toward seating or bedrooms for comfort and noise management.
Controls, Connectivity, And Features
- Smart features (Wi‑Fi, app control, voice assistant) add convenience for remote monitoring and scheduling.
- Timers, sleep modes, and variable fan speeds improve nighttime comfort and efficiency.
Energy Efficiency And Operating Cost
- Look for inverter-driven compressors and higher SEER/SEER2 values for mini splits and smart window models to lower energy use.
- Energy Star certification on smaller units indicates better-than-average efficiency for that class.
Maintenance And Filter Access
- Choose units with easy-to-remove washable filters and clear access panels for regular cleaning to maintain airflow in dust-prone basement environments.
- Confirm availability of replacement parts and refrigerant service for mini splits.
Multiple Comparison Perspectives
- Performance vs. Installation Cost: Mini splits deliver the best long-term performance but carry higher install costs. Window units balance capex and function. Portable units minimize upfront disruption.
- Energy Efficiency vs. Operating Flexibility: Inverter heat pumps (mini splits) win on energy use. Window and portable units provide flexible placement and lower installation commitment.
- Noise vs. Power: High BTU window units and portables often run louder; mini splits and well-mounted window units can be comparatively quiet.
Use these factors to align equipment type, capacity, and features with your basement’s size, insulation, humidity, and access for installation. Proper sizing and placement are critical for efficient, year-round basement comfort.
Tips for Getting the Best HVAC Prices
- Prioritize Quality Over Cost
The most critical factor in any HVAC project is the quality of the installation. Don’t compromise on contractor expertise just to save money. - Check for Rebates
Always research current rebates and incentives — they can significantly reduce your overall cost. - Compare Multiple Quotes
Request at least three estimates before making your choice. You can click here to get three free quotes from local professionals. These quotes include available rebates and tax credits and automatically exclude unqualified contractors. - Negotiate Smartly
Once you've chosen a contractor, use the proven strategies from our guide — How Homeowners Can Negotiate with HVAC Dealers — to get the best possible final price.