Through-wall air conditioners with heating combine cooling, supplemental heat, and space-saving installation for year-round comfort. The table below summarizes the most relevant models selected for performance, installation type, and room coverage to help American homeowners compare features at a glance.
| Model | Type | Cooling BTU | Heating | Ideal Room Size |
|---|---|---|---|---|
| Keystone 23,200 BTU Through-the-Wall | Through-Wall | 23,200 | 16,000 BTU Supplemental | Up To 1,500 Sq.Ft. |
| Keystone 14,000 BTU Wall Mounted | Wall Mounted | 14,000 | 10,600 BTU Supplemental | Up To 700 Sq.Ft. |
| Frigidaire Through-the-Wall 12,000 BTU (115/120V) | Through-Wall | 12,000 | None Listed (Cooling-Focused) | Up To 550 Sq.Ft. |
| BLACK+DECKER 18,000 BTU Window/Through-Wall | Window Or Through-Wall | 18,000 | Not Specified | Up To 1,000 Sq.Ft. |
| ROVSUN 8,000 BTU Through-the-Wall | Through-Wall | 8,000 | Heating Mode Included | Up To 350 Sq.Ft. |
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Keystone 23,200 BTU Through-The-Wall AC
Overview: This Keystone unit is designed as a full through-the-wall air conditioner with a high cooling capacity and built-in supplemental heating. The unit pairs 23,200 BTU cooling with 16,000 BTU of supplemental heat to serve large open areas.
- Cooling And Heating Modes: Cools large spaces and provides supplemental heat for milder cold conditions. Heating is labeled as supplemental and not intended as the primary heating source in severe winter conditions.
- Smart Remote: Remote reads local temperature and updates the unit every few minutes for more accurate comfort control.
- All-In-One Functionality: Cooling, supplemental heating, dehumidification, and fan circulation are included for seasonal flexibility.
- Ideal Use: Best for large rooms up to about 1,500 square feet where through-the-wall installation is possible.
Keystone 14,000 BTU Wall Mounted AC Heater
Overview: A compact wall-mounted unit delivering 14,000 BTU cooling and 10,600 BTU supplemental heating. Designed to save window and floor space while offering year-round comfort features.
- Supplemental Heat Mode: Intended for moderate outdoor temperatures (approx. 23–76°F) and as a secondary heat source.
- Multi-Function: Offers cooling, supplemental heating, dehumidification, and fan-only circulation for flexible operation.
- Installation Needs: Requires a 230V/20A dedicated outlet and comes with an interior trim kit for a finished look.
- Target Space: Suitable for larger rooms up to roughly 700 square feet where a wall-mounted chassis is preferred over window installation.
Frigidaire 12,000 BTU Through-The-Wall AC
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Overview: Frigidaire’s through-the-wall 12,000 BTU model focuses on reliable cooling with a slide-out chassis for simpler installation and maintenance. It includes standard convenience features for bedroom or living areas.
- Slide-Out Chassis: Simplifies installation and service access for technicians and homeowners.
- Washable Filter: Mesh filter captures dust and is easy to clean to maintain efficiency.
- Control Features: Remote control, timer, and sleep mode support user comfort and energy management.
- Coverage: Designed for rooms up to approximately 550 square feet and intended specifically for through-the-wall mounting rather than windows.
BLACK+DECKER 18,000 BTU Window/Through-The-Wall AC
Overview: This BLACK+DECKER model supports both window and through-wall installation paths, offering 18,000 BTU cooling for larger spaces and multiple modes for operational flexibility.
- Flexible Installation: Can be configured for window or through-wall openings, useful where both options are possible or changeable.
- Controls & Modes: Remote control, sleep mode, energy saver, and a 24-hour timer provide standard convenience and efficiency options.
- Cooling Capacity: Targets spaces up to roughly 1,000 square feet, making it suitable for whole-floor rooms, apartments, or large living areas.
- Fan Speeds: Multiple fan levels including auto settings to balance noise and airflow.
ROVSUN 8,000 BTU Through-The-Wall Unit
Overview: The ROVSUN through-the-wall unit is positioned for smaller rooms and apartments, offering 4-in-1 functionality and simplified controls for compact living spaces.
- 4-In-1 Operation: Cool, heat, fan, and dry modes with three fan speeds and a 24-hour timer for varied comfort needs.
- Control Options: LED panel and remote control provide dual-operation convenience.
- Target Rooms: Suitable for bedrooms, dorms, or small studios up to about 350 square feet.
- Year-Round Use: Heating and cooling capability make this a compact all-season solution where space is limited.
Buying Guide For Through Wall AC Heaters
This guide outlines key considerations to compare through-wall air conditioners with heating capability. Use these points to match unit features to room needs, installation constraints, and ongoing operation.
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Capacity And Room Size
Cooling BTU Rating: Choose a BTU rating based on square footage and ceiling height. Higher BTU units like 18,000–23,200 are suited to open living spaces and large rooms; smaller units (8,000–12,000 BTU) fit bedrooms and small apartments.
Heating Capability: Many units list supplemental heating. Supplemental heat is useful for mild winters and to reduce load on central systems, but it is not a substitute for a primary furnace in cold climates.
Installation Requirements
Through-Wall vs Window: Through-wall installation requires a wall sleeve or framed opening and may need professional installation. Window/through-wall convertible units offer flexibility but check wall depth, sleeve size, and structural considerations.
Electrical Needs: Verify voltage and amperage—some units require 230V/20A circuits, while others run on standard 115/120V. Dedicated circuits and proper wiring ensure safe operation and reliability.
Features And Controls
Remote And Thermostat Accuracy: Remote sensors that read room temperature can improve comfort. Check whether the remote updates the unit frequently and whether the unit supports programmable timers and sleep modes.
Dehumidification & Fan Only: Integrated dehumidify and fan-only modes enhance year-round utility. For humid climates, strong dehumidification reduces perceived temperature without excessive cooling.
Energy Efficiency And Operation Cost
Efficiency Ratings: Look for energy efficiency specs when provided or features like ECO modes and inverter compressors in split systems. Higher efficiency typically reduces operating costs but may raise upfront complexity.
Noise Levels: Wall-mounted and through-wall units vary in noise; check product specs and user feedback on sound if nighttime operation is important.
Maintenance And Serviceability
Access For Cleaning: Slide-out chassis and washable filters make maintenance easier. Regular cleaning of filters and clearance around the exterior coil extends unit life and maintains efficiency.
Replacement Parts And Warranty: Confirm warranty terms and the availability of replacement parts or service technicians experienced with through-wall units.
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.
Comparison Perspectives
- Large Spaces: Choose high-BTU through-wall models (e.g., 23,200 BTU) for open-plan living; ensure electrical capacity and wall opening size.
- Small To Medium Rooms: Smaller through-wall units (8,000–12,000 BTU) balance capacity, cost, and quieter operation for bedrooms and offices.
- Dual-Use Installations: Convertible window/through-wall units are ideal where installation plans may change or where you need temporary through-wall setup.
- Supplemental Heat Need: If supplemental heating is required, select models that clearly state heating BTU and operating range; plan for a primary heat source if you face harsh winters.
Final Selection Checklist
- Measure room square footage and ceiling height to select appropriate BTU capacity.
- Confirm wall sleeve dimensions, wall thickness, and installation access.
- Verify electrical requirements—voltage, amperage, and need for a dedicated circuit.
- Compare features: supplemental heat, dehumidification, remote/thermostat accuracy, and timers.
- Factor in maintenance access: slide-out chassis and washable filters reduce service costs.