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The best mobile home AC for most homes is a split heat pump or split AC matched to a mobile home coil, or a packaged unit when there is no room inside. Ductless mini splits win when the belly ducts are in bad shape. Window units are a stopgap. Our mobile home air conditioning team installs all of them.
Not sure which one fits your home? Call (918) 380-0760 and we will walk through it with you.
Key Takeaways
- Best overall: a split heat pump or split AC with a mobile home coil, sized to your home and your ducts.
- No indoor space: a packaged unit sits outside and feeds the belly duct under the floor.
- Bad ducts or an addition: a ductless mini split skips the ducts completely.
- Oklahoma rule: new split AC systems under 45,000 BTU must hit at least 14.3 SEER2.
- Size matters: most single wides need 2 to 2.5 tons, and most double wides need 3 to 4 tons.
Why Mobile Home AC Is Different From Site-Built Homes
Mobile home AC is different because the house is built differently. A manufactured home has small ducts, tight closets and a furnace built for mobile homes. The AC has to fit that setup, or it will run loud, cool poorly and wear out early.
The Furnace Closet and the Mobile Home Coil
Most single wides have a downflow furnace in a hallway closet. Downflow means air enters at the top and blows down into the floor. A central AC adds an outdoor condenser plus an indoor coil that slides into that furnace cabinet. That coil is called a mobile home coil. A standard house coil usually will not fit.
Belly Ducts and Crossover Ducts
Air travels through a belly duct, a metal trunk that runs under the floor inside the bottom board. Double wides add a crossover duct, a flexible tube under the home that joins the two halves. These ducts are small, so airflow is tight from day one. When they sag, tear or get crushed, cooling drops fast.
HUD Code Rules for Cooling Equipment
The HUD manufactured home code sets the ground rules. Cooling equipment must be listed by a recognized testing lab and installed to that listing. It must be secured against vibration and road shock. It must also stay reachable for service without tearing out walls. For heat pumps, the compressor must cover at least 60% of yearly heating, and backup electric heat cannot run above 40°F except during defrost.
The 5 Best AC Types for Mobile Homes, Compared
What AC works best for mobile homes depends on your ducts, your furnace and your space. Five kinds of AC do the job. Each one fits a different house and budget. Here is how they stack up.
1. Split AC With a Mobile Home Coil
This is the classic setup. An outdoor condenser connects to a coil inside your existing furnace. It keeps your furnace for heat and adds central cooling. It works well if the furnace is newer and the ducts are in good shape.
2. Split Heat Pump
A heat pump looks like an AC outside, but it also heats. It moves heat instead of making it. That makes it a strong fit for eastern Oklahoma, where winters are mostly mild. Many mobile homes run on electric resistance heat, so a heat pump can cut winter power use a lot. It also pulls moisture out of the air in muggy summers.
3. Packaged Unit
A packaged unit holds everything in one cabinet that sits outside on a pad. It connects to the belly duct with short flex ducts. It frees up the furnace closet and keeps noise outside. It comes as AC only, AC with electric heat, a heat pump, or gas and electric.
4. Ductless Mini Split
A mini split has an outdoor unit and one or more wall heads inside. No ducts are needed. It is the fix for homes with crushed belly ducts, additions, or one room that never cools. According to ENERGY STAR ductless data, certified mini splits use up to 60% less energy than standard electric radiators.
5. Window or Through-the-Wall Unit
A window unit cools one room. It is the lowest upfront cost and the easiest to install. It is also loud, and mobile home windows are thin and not built for the weight. Use it as a stopgap or for a single room, not the whole house.
| AC type | Best for | Uses ducts? | Heats too? | Watch out for |
|---|---|---|---|---|
| Split AC with mobile home coil | Homes with a good furnace and ducts | Yes | No, keeps your furnace | Coil must match the furnace cabinet |
| Split heat pump | Homes on electric heat | Yes | Yes | Needs a matched air handler |
| Packaged unit | Tight closets, no indoor space | Yes | Optional | Duct connection must be sealed |
| Ductless mini split | Bad ducts, additions, hot rooms | No | Yes | Several heads needed for whole home |
| Window or wall unit | One room, short term | No | Some models | Noise, weight, weak windows |
What Size AC Does a Mobile Home Need?
A mobile home usually needs about 20 to 25 BTU per square foot of living space. One ton of cooling equals 12,000 BTU. So a 1,000 square foot single wide lands near 2 tons. Use the chart below as a starting point, then confirm with a load calculation.
| Home size | Approx. square feet | Starting BTU range | Typical tons |
|---|---|---|---|
| 14×60 single wide | 840 | 17,000 to 21,000 | 1.5 to 2 |
| 14×70 single wide | 980 | 20,000 to 24,500 | 2 |
| 16×80 single wide | 1,280 | 25,600 to 32,000 | 2.5 |
| 18×80 single wide | 1,440 | 28,800 to 36,000 | 2.5 to 3 |
| 24×48 double wide | 1,152 | 23,000 to 28,800 | 2 to 2.5 |
| 28×60 double wide | 1,680 | 33,600 to 42,000 | 3 to 3.5 |
| 32×76 double wide | 2,432 | 48,600 to 60,800 | 4 to 5 |
Why Bigger Is Not Better
An oversized AC cools the air fast, then shuts off before it pulls out the moisture. That leaves the home cold and clammy. It also short cycles, which means it turns on and off too often and wears out parts. In humid eastern Oklahoma summers, the right size matters more than extra power.
SEER2 Efficiency Rules for Mobile Home AC in Oklahoma
SEER2 is the rating that tells you how much cooling you get per unit of power. Higher is more efficient. Under the federal SEER2 efficiency rules, Oklahoma and Arkansas sit in the Southeast region. In the South, the split AC rule is based on the install date, so any split AC installed on or after January 1, 2023 must meet it.
| Equipment type | Minimum in Oklahoma and Arkansas |
|---|---|
| Split AC under 45,000 BTU | 14.3 SEER2 |
| Split AC 45,000 BTU and up | 13.8 SEER2 |
| Packaged AC | 13.4 SEER2 |
| Split heat pump | 14.3 SEER2 and 7.5 HSPF2 |
| Packaged heat pump | 13.4 SEER2 and 6.7 HSPF2 |
HSPF2 is the heating version of the same idea. Leftover stock that misses these numbers cannot legally be installed as a new split AC in our area. Always check the rating plate before you buy.
Signs Your Mobile Home AC Is the Wrong Fit
A wrong-fit AC shows itself fast. Watch for these signs, especially in July and August.
- Short cycling: the AC runs for a few minutes, shuts off, then starts again.
- Clammy air: the home feels cool but sticky, a sign of an oversized unit.
- Weak airflow: little air at the far bedroom vents, often a belly duct or crossover duct problem.
- High bills: power costs climb even though nothing else changed.
- Loud furnace closet: whistling or rattling from a coil that is too big for the cabinet.
- Ice on the line: frost on the copper line or coil, which often points to low airflow.
Ducts are often the hidden cause. ENERGY STAR duct research shows that in a typical house, 20 to 30 percent of the air moving through ducts is lost to leaks, holes and loose joints. Under a mobile home, torn bottom boards and crushed crossovers can make it worse. Our mobile home duct repair service finds and seals those leaks.
Seeing two or more of these signs? Call Girdner Heat & Air at (918) 380-0760. We will check your ducts, coil and sizing before you spend money on a new system.
How to Choose the Best AC for Your Mobile Home
Follow these five steps to land on the right system. Each step rules out options that will not work for your home.
- Check your ducts first. Look under the home for torn bottom board, sagging or crushed crossover ducts. Bad ducts point you toward a mini split or a duct repair before anything else.
- Look at your furnace. Find the data plate in the furnace closet. If the furnace is newer and has room for a coil, a split AC or heat pump is the simplest upgrade.
- Measure your space. Multiply length by width. Use the size chart above for a starting tonnage, then ask for a load calculation.
- Pick your heat source. On electric heat, a heat pump usually saves the most. On gas, a split AC or gas and electric packaged unit keeps your gas heat.
- Confirm the rating. Make sure the unit meets 14.3 SEER2 for split AC or 13.4 SEER2 for packaged units in Oklahoma and Arkansas.
If your furnace is near the end of its life, it can make sense to replace both at once. Our mobile home furnace service can match a new furnace and coil together. If you lean toward a heat pump, our heat pump service team handles install and upkeep.
What Mobile Home AC Costs
Mobile home AC cost depends on the type, the size and the work around it. Below are equipment-only prices we saw on online retail listings in September 2026. Installed prices are higher because they add labor, refrigerant lines, electrical work and duct connections.
| Option | Equipment price seen online | What adds to the installed cost |
|---|---|---|
| Window unit, 5,000 BTU | About $190 to $200 | Window framing, outlet |
| Portable unit, 8,000 BTU | About $300 to $400 | Vent kit |
| Single-zone mini split, 12,000 BTU | About $450 to $650 | Line set, electrical, pro install |
| 2 ton split AC with mobile home coil | About $2,200 to $2,850 | Refrigerant lines, pad, electrical, labor |
| 2 ton packaged unit | About $2,800 to $4,000 | Duct connection, pad, labor |
| AC plus electric furnace system | About $3,600 to $3,900 | Old furnace removal, labor |
The cheapest box is not always the cheapest system. A leaky crossover duct or a mismatched coil can waste the savings in one summer. Ask for a quote that includes the duct check.
Mobile Home AC FAQs
What size AC unit do I need for a 16×80 mobile home?
A 16×80 mobile home has about 1,280 square feet, so most need a 2.5 ton (30,000 BTU) system. At 20 to 25 BTU per square foot, the range is about 25,600 to 32,000 BTU. Older homes with thin insulation or strong afternoon sun may need 3 tons.
What size air conditioner for a 14×70 mobile home?
A 14×70 mobile home has about 980 square feet. Most need a 2 ton system, which is 24,000 BTU. Homes with new windows and good insulation may get by with slightly less. Always confirm with a load calculation before you buy.
What is the best way to cool a mobile home?
The best way to cool a mobile home is a properly sized central system with sealed ducts. Add shade on the west side, keep the skirting closed, and change the filter every one to three months. A mini split is the best fix for rooms the ducts do not reach.
Are mobile home AC units different?
The outdoor unit is often the same as a regular home AC. The difference is inside. Mobile homes need a coil or air handler that fits a mobile home furnace cabinet and pushes air down into small belly ducts. Packaged units made for mobile homes also have a matching duct connection.
How much does a new AC cost for a mobile home?
Equipment alone runs from about $190 for a window unit to about $4,000 for a packaged unit, based on September 2026 online listings. Installed central systems cost more once labor, lines and duct work are added. A free on-site quote gives you the real number for your home.
Get Your Mobile Home Cooled Right in Stilwell
What AC works best for mobile homes comes down to fit. The right system matches your ducts, your furnace and your square footage. Call Girdner Heat & Air at (918) 380-0760 and ask for a mobile home AC check. We will look under the home, check your coil and sizing, and give you a clear, upfront quote. We answer 24/7 and serve Stilwell, Tahlequah, Sallisaw and nearby towns in Oklahoma and Arkansas. You can also request a free quote online.
