One machine for summer humidity and winter chill sounds simple until you start comparing BTU ratings, SEER2 efficiency, and how each system actually fits your home. Air conditioner furnace comboes solve the two-season problem in one package, but the right match depends on your square footage, ductwork situation, and comfort expectations. This lineup covers window units with built-in heat, ductless mini-splits for additions, and full central split systems for whole-home retrofits. Use it to find the combo that fits your space, your climate, and your tolerance for installation effort.
A Quick View Of The Lineup
LG 6000 BTU Window Air Conditioner with WiFi (LW6024RSMX)
Midea 12,000 BTU Window Air Conditioner with Heat
MrCool DIY Select Mini Split 12K BTU 17.5 SEER2
MRCOOL 12000 BTU Ductless Inverter Mini Split
ACiQ 2.5 Ton 14.5 SEER2 Split System with Gas Furnace
Goodman 3 Ton 15.2 SEER2 Complete Split System
Goodman 2 Ton 14 SEER2 Complete Split System
A Breakdown Of The Leading Choices
Small bedrooms, home offices, and studio apartments rarely need the muscle of a 12,000 BTU unit, and that’s where the LG LW6024RSMX earns its place. At 6,000 BTU it’s sized for rooms up to about 250 square feet, which covers most secondary spaces without wasting energy cooling air nobody uses.
The built-in Wi-Fi and compatibility with the LG ThinQ app, Alexa, and Google Assistant let you nudge the temperature from the couch or schedule a cool-down before you get home from work. A washable filter cuts down on replacement costs, and owners commonly appreciate the quiet operation during overnight use. Compared to the Midea below, this unit stays focused on cooling only, so it works best in milder climates or as a supplement to existing heat.
Bright Spots
- Smartphone and voice control through the LG ThinQ app, Alexa, and Google Assistant
- Reusable washable filter lowers long-term maintenance costs
- Right-sized for bedrooms and small offices up to 250 square feet
- Compact window footprint suits renters who cannot modify walls
Points To Keep In Mind
- No heating function, so it does not replace a furnace or baseboard heat
- 6,000 BTU limits it to smaller rooms; open layouts may feel underpowered
- Wi-Fi setup requires a stable home network and app registration
Who It Suits Best
Renters and homeowners cooling a single bedroom, den, or small office in a mild climate where supplemental heat isn’t a daily concern.
A Better Fit Elsewhere
Runners living in four-season climates should consider the Midea 12,000 BTU Window Air Conditioner with Heat, which adds a supplemental heating mode for shoulder seasons.
Where the LG above handles a single room, the Midea 12,000 BTU model stretches into living areas up to 550 square feet and adds a heat mode for shoulder seasons. The inverter compressor adjusts output gradually rather than cycling on and off abruptly, which is why Midea positions it as a quieter, more energy-efficient unit for everyday use.
The heat function works as a supplemental source for spring and fall, but there’s a practical ceiling: it won’t operate when outdoor temperatures drop to 41°F or below. In a four-season climate that means relying on a furnace once deep winter arrives, so think of this unit as a two-season workhorse rather than a full heating replacement. Electronic controls and a remote handle day-to-day adjustments, and the dehumidifier function pulls extra moisture during sticky summer stretches.
Noteworthy Benefits
- Cooling coverage up to 550 square feet suits most living rooms
- Supplemental heat extends usefulness into spring and fall
- Inverter compressor aims to reduce noise and energy swings
- Built-in dehumidifier helps muggy climates
Trade Offs
- Heat function disengages at or below 41°F outdoor temperature
- Window installation requires a sturdy sash and side support
- 12,000 BTU pulls more amperage, so verify your circuit can handle the load
Feature Snapshot
Made For
Homeowners in mixed-climate regions who want one window unit to handle a large living room through most of the year without installing ductwork.
Skip It When
You need to condition a single small bedroom; the LG LW6024RSMX runs more efficiently in tight quarters and costs less to operate.
Mini-splits used to mean scheduling a certified HVAC technician to handle refrigerant lines, and the labor cost often dwarfed the equipment itself. The MrCool DIY Select changes that script: it ships with a pre-charged 11.5-foot quick-connect line set, so the refrigerant loop arrives sealed and ready to couple without a vacuum pump or EPA-certification paperwork.
At 12,000 BTU it covers single-zone areas roughly between 500 and 1,200 square feet depending on insulation, ceiling height, and sun exposure. A 17.5 SEER2 cooling rating and 8.8 HSPF2 heating performance put it in efficient territory for year-round use. This is the pick for a detached garage conversion, a sunroom, or a bonus room above a garage where running new ductwork is impractical. The included one-year labor warranty through IWAE softens the risk for first-time installers tackling a multi-step project.
Where It Delivers
- Pre-charged line set removes the need for professional refrigerant handling
- Heat pump function handles winter heating in moderate climates
- 17.5 SEER2 efficiency keeps long-term operating costs in check
- Single-zone ductless design avoids tearing into walls for duct runs
Worth Noting
- DIY still requires electrical work and a wall sleeve; not a weekend beginner project
- 11.5-foot line set limits how far the indoor and outdoor units can sit apart
- Single-zone only; multi-room coverage requires additional units
Feature Card
Best Suited To
Comfortable DIYers conditioning a garage, workshop, or addition where installing ductwork is not realistic and a single zone covers the space.
Not Your Match When
You need whole-home central air conditioning and gas heating; the ACiQ 2.5 Ton Split System delivers that scale with a matched furnace instead.
Compared to the MrCool DIY Select above, this MRCOOL ductless inverter splits the difference between a window unit and a full central retrofit. It cools and heats up to about 550 square feet, which fits a moderately sized open-plan apartment or a finished basement zone where landlords restrict permanent modifications.
The inverter technology modulates output instead of hard-cycling, so you may notice steadier temperatures and lower electrical noise from the compressor. Because the system is ductless, you avoid the energy losses that come with leaky ductwork in older homes. The catch, as with any mini-split, is that a licensed installer or a confident DIYer still needs to mount the indoor head, run a dedicated electrical circuit, and connect the refrigerant lines. Once in place, owners commonly appreciate how quietly the indoor unit runs and how the heat pump covers mild winters without firing up the furnace.
Positive Takeaways
- Year-round cooling and heating in one ductless system
- Reaches up to 550 square feet for open living areas
- Inverter compressor aims to limit efficiency swings
- Avoids duct-related energy losses common in older homes
Some Limits To Know
- Installation still requires electrical and line-set work
- Heat pump output drops as outdoor temperatures fall into deep winter territory
- Single-zone coverage; multi-room needs require multiple indoor heads
Right Fit For
Apartment dwellers and small-home owners wanting a ductless year-round system for a single open zone without committing to a full central retrofit.
Another Choice May Suit
Workshop and garage owners should look at the MrCool DIY Select Mini Split, which ships with the pre-charged line set included for an easier install.
Window and mini-split units cover single rooms well, but central air conditioning and gas heating are still the standard for whole-home comfort. The ACiQ 2.5 Ton split system pairs a 14.5 SEER2 air conditioner with an 80% AFUE natural gas furnace and a matched 17.5-inch evaporator coil, giving you a coordinated system rather than mismatched parts.
Available in upflow/horizontal or downflow/horizontal configurations, the package fits a range of basement, attic, and crawlspace layouts. AFUE (Annual Fuel Utilization Efficiency) measures how much fuel converts to usable heat, and 80% AFUE is the common baseline for gas furnaces. This is a professional install, so plan for an HVAC contractor to handle the line set, gas connections, and duct tie-ins. The trade-off is whole-home coverage and reliable gas heat through cold winters that would shut down a heat pump.
Good Reasons To Consider
- Matched components reduce compatibility guesswork
- Gas furnace handles deep-winter heating that overwhelms heat pumps
- Available airflow orientations suit different mechanical room layouts
- Central system delivers consistent temperatures across the whole house
Room For Improvement
- Professional installation adds significant labor cost
- 80% AFUE is efficient, but not the top tier available
- Requires existing or new ductwork throughout the home
Quick Facts
Perfect Match For
Homeowners replacing an aging central air conditioner and furnace in a mid-size home who want matched components without piecing parts together.
Look Elsewhere When
Larger homes needing more cooling capacity should step up to the Goodman 3 Ton 15.2 SEER2 Complete Split System, which handles greater square footage with higher cooling efficiency.
When the ACiQ above runs out of capacity, the Goodman 3 Ton system picks up. It pairs the GLXS4BA3610 condenser with the CAPTA3626B3 upflow coil and an 80,000 BTU single-stage furnace, plus install accessories to streamline the contractor’s job. The matched kit replaces legacy models like the GSX140361 and GMES800803BN, which makes retrofit planning easier if you’re swapping an aging setup.
Goodman has built a reputation for value-driven central equipment, and this bundle reflects that. A 15.2 SEER2 rating (SEER2 is the updated efficiency standard that replaces the older SEER metric) edges past the ACiQ for cooling efficiency, and the R-32 refrigerant reflects the industry’s gradual shift toward lower-global-warming-potential options. The single-stage furnace is straightforward rather than variable-speed, which keeps the price approachable for a full central upgrade.
Useful Highlights
- 3-ton capacity covers larger homes that exceed 2.5-ton limits
- 15.2 SEER2 efficiency improves over older 14 SEER2 systems
- Matched coil, condenser, and furnace reduce spec-mismatch risk
- Install accessories included to streamline contractor setup
Soft Spots
- Single-stage furnace is less precise than modulating or two-stage units
- Professional install required; not a DIY project
- 80% AFUE furnace is solid but not the highest tier
Who Should Grab It
Homeowners with larger floor plans needing a whole-home central replacement that pairs a higher-efficiency condenser with a familiar gas furnace.
Where Another Pick Suits Better
Smaller central-home owners on tighter square footage should weigh the Goodman 2 Ton 14 SEER2 Complete Split System, which trims capacity to match without overspending.
Rounding out the Goodman pair, the 2 Ton 14 SEER2 system targets the smaller end of whole-home central air and gas heat. The package combines the GLXS3BN2410 condenser, the CAPTA3022B3 upflow coil, and the GR9S800803BN 80,000 BTU furnace, with install accessories in the box.
Where the 3 Ton Goodman fits mid-to-large houses, this 2 Ton setup suits homes in the 1,000 to 1,400 square foot range depending on insulation and climate. 14 SEER2 meets current baseline efficiency standards without pushing into premium pricing, and the single-stage 80% AFUE furnace keeps operating concepts simple. If your existing ductwork is properly sized and you don’t need variable-speed refinement, this is the kind of matched kit that gets a home comfortable year-round without overspecifying capacity.
Practical Advantages
- Right-sized 2-ton capacity for smaller central homes
- 14 SEER2 meets current baseline efficiency standards
- Matched Goodman components simplify spec selection
- Install accessories included for the contractor
Honest Caveats
- 2-ton output may underserve larger or poorly insulated homes
- Single-stage furnace cycles on and off rather than modulating
- Professional installation is required for refrigerant and gas work
Technical Highlights
Whose Home It Belongs In
Owners of smaller central homes who want a Goodman-matched system with appropriate capacity and baseline efficiency without paying for extra tonnage.
Swap It Out When
Mid-size homes that consistently feel undercooled by a 2-ton system should step up to the Goodman 3 Ton 15.2 SEER2 Complete Split System for more headroom.
Picking The Right Size And System For Your Home
Sizing comes first, and the rule of thumb runs roughly 20 BTU per square foot for standard ceiling heights, though sunny exposures, high ceilings, and kitchens push that number up. Measure the room or the conditioned footprint of the home before comparing models, and resist the urge to oversize; an oversized air conditioner short-cycles, wastes energy, and struggles to dehumidify.
Efficiency ratings matter for long-term operating cost. SEER2 measures seasonal cooling efficiency, HSPF2 measures heat-pump heating efficiency, and AFUE measures gas furnace fuel-to-heat conversion. Higher numbers cost more upfront but typically pay back over years of use, especially in regions with long cooling or heating seasons.
Ductwork dictates the system category. Homes with existing ducts can adopt a central split system like the ACiQ or Goodman kits. Homes without ducts, or rooms added onto a finished structure, often do better with a ductless mini-split. Window units with heat cover single rooms affordably when ducts are out of reach and a full mini-split install is overkill.
Climate shapes the heating side. Heat pumps lose output as outdoor temperatures drop, so cold-winter regions benefit from a gas furnace backup or a dedicated gas split system. Mild climates can rely on a heat pump or a window unit with supplemental heat for most of the year.
Installation effort varies widely. A window unit takes minutes; a mini-split takes a full afternoon for a prepared DIYer; a central split system takes a crew and permits. Match the project to your timeline, your toolset, and your local code requirements.
Key Considerations Across These Picks
Mistakes Worth Dodging
Buying by BTU alone is a common trap. A unit that’s too large short-cycles and never pulls humidity from the air, leaving rooms cool but clammy. Pair the BTU rating to square footage, insulation quality, and sun exposure rather than defaulting to the biggest number available.
Skipping the electrical check is another frequent oversight. Window units, mini-splits, and central systems each draw different amperage, and a circuit that’s already near capacity will trip breakers or overheat wiring. Confirm the voltage and circuit rating before ordering.
Where The Extra Money Goes
Higher SEER2 and AFUE ratings translate directly into smaller utility bills, but the premium takes years to recoup. Two-stage or variable-speed furnaces cost more because they modulate output instead of blasting at full capacity, which improves comfort and reduces temperature swings.
Pro install kits, like the matched Goodman and ACiQ bundles, cost more than mixing parts from different brands, but they cut compatibility risk and usually include the small accessories that would otherwise add up. When the upgrade improves both daily comfort and long-term reliability, it tends to earn its keep.
