Mobile home HVAC in Birmingham, AL
Manufactured homes use different furnaces, different ductwork and different rules than a site-built house. We work on them with the right parts and the right approach.
Mobile and manufactured homes need HUD-labeled downflow furnaces, ducts that run through the belly under the floor and a crossover duct between sections on doublewides. Zeltman Heating & Air repairs and replaces manufactured home furnaces, heat pumps and AC, fixes torn belly ductwork and crushed crossovers, and serves rural lots across the Birmingham area.
What makes manufactured home heating and cooling different
A manufactured home is built to the federal HUD code, and that includes the heating equipment. The furnace has to be a model labeled for manufactured housing, usually a slim downflow unit in a hall closet that pushes air down into the floor. A standard residential furnace is not a legal swap, even if it seems to fit.
The ductwork lives in the belly, the space under the floor wrapped in a vapor barrier. On a doublewide, a crossover duct links the two halves underneath the home. Belly ducts and crossovers get torn by pets and rodents, crushed during a move and pulled loose by settling, so one side goes cold or warm while the other side is fine.
Most manufactured home furnaces use sealed combustion, drawing air from outside and venting through a roof jack. A blocked roof vent, a disconnected pipe or a rusted heat exchanger can leak carbon monoxide. That's why these homes need working CO alarms, just like any house with gas appliances.
Many manufactured homes now run a heat pump or central AC tied into the furnace cabinet. Sizing still follows a Manual J load calculation, since singlewides and doublewides lose heat differently. The outdoor unit sits on a pad beside the home, and the skirting has to stay vented and intact around the belly.
What we check on a manufactured home system
- Furnace data plate for the HUD manufactured home label
- Burners, igniter, blower and limit switches in the furnace closet
- Sealed combustion air and roof vent connection
- Heat exchanger condition and CO readings
- Crossover duct, collars and straps under a doublewide
- Belly duct runs, register boots and vapor barrier tears
- Skirting vents and access around the outdoor unit
- Heat pump or AC charge, coil and thermostat wiring
What mobile home HVAC work costs in Birmingham
$185 to $1,460
Most furnace repairs, crossover replacements and belly duct fixes fall in this range. A new HUD-labeled downflow furnace is priced separately and commonly lands between $2,860 and $5,370 installed, with a heat pump system priced higher. You see the price before any work starts.
Ask for a price (659) 777-4129What moves the number
- Singlewide or doublewide
- Doublewides add a crossover duct and longer runs, which means more to inspect and sometimes more to repair.
- Access under the home
- Low clearance, mud or damaged skirting slows belly work and sometimes means panels need replacing.
- Gas or electric heat
- Gas furnaces need venting and combustion checks, while electric furnaces and heat pumps need heat strip and electrical work.
- Extent of belly damage
- A single tear is a quick patch. Rodent damage across the belly may mean new duct sections and new vapor barrier.
- Equipment parts
- HUD-labeled furnaces and their parts are specific to manufactured housing, so the model on the data plate matters.
How a mobile home HVAC visit goes
Tell us about the home
Let us know if it is a singlewide or doublewide, gas or electric heat, and read us the furnace label if you can see it.
Start at the furnace closet
We test the furnace or air handler first, then the outdoor unit if there is one, so the equipment side is clear.
Go under the home
With a skirting panel off, we follow the belly ducts and crossover, looking for tears, crushed sections and loose joints.
Price the fix
You get the cause, the options and the price before any work starts, whether that is a duct repair, a part or a new HUD-labeled furnace.
Repair and close up
We seal the belly wrap, reattach the skirting and confirm airflow at the registers on both ends of the home.
When manufactured home HVAC work makes sense
One end of the home is always uncomfortable
A cold back bedroom or a warm living room usually points to a torn belly duct, a crushed crossover or a loose register boot.
The furnace is the original unit
Downflow furnaces from the home's first years often have rusted heat exchangers and worn blowers. A new HUD-labeled model is often the safer call.
You want central air or a heat pump
Adding a heat pump or AC to the existing furnace cabinet and belly ducts can retire window units and space heaters.
Winter power bills are high
Leaky belly ducts and missing skirting let heat escape under the floor, and electric strip heat runs far more than it should.
Water or sagging under the floor
Condensate leaks or sweating ducts soak the belly wrap and insulation, which sags and invites pests if left alone.
The home was recently moved or set
Crossovers and duct connections need checking after a move, before the first summer or winter on a new lot.
Manufactured homes around Birmingham and St. Clair County
St. Clair County has a wide mix of lake homes, newer subdivisions and manufactured homes on rural lots, especially out along the I-20 corridor. Those rural lots often have red clay under the home, which holds moisture against the belly. We plan for that and bring what we need to work under the floor.
Rural lots around Leeds and Odenville bring similar calls. A cold snap into the 20s exposes a torn belly duct quickly, and summer humidity makes uninsulated ducts sweat and drip. From our base on 15th Avenue North, I-20 and US-411 carry us east toward Moody and Pell City.
Areas we cover most often
We repair and replace equipment from these manufacturers, plus most other makes.
Questions about mobile home HVAC in Birmingham
No. Manufactured homes require a furnace labeled for manufactured housing under the HUD code, usually a downflow model with sealed combustion. A standard residential furnace is not approved for that use. We replace old units with properly labeled models sized for the home.
On a doublewide, the crossover duct runs under the home and carries air from the furnace side to the other half. It can be crushed, torn or disconnected, which leaves one side of the home uncomfortable. We inspect it and replace it with insulated duct when needed.
In many cases, yes. Most manufactured home furnaces are built to accept an add-on coil, and a heat pump or AC outdoor unit sits on a pad beside the home. We size it with a load calculation and check the belly ducts first.
We remove a skirting panel, open the belly wrap where the damage is, repair or replace the duct section and seal it, then patch the vapor barrier so moisture and pests stay out. Rodent damage over a wide area may mean replacing longer runs.
Yes. Any home with a gas furnace or water heater should have working CO alarms. A blocked roof vent or cracked heat exchanger on a manufactured home furnace can leak carbon monoxide, so we check both during every heating visit.
Yes. We work on manufactured homes across St. Clair, Jefferson and Shelby counties, including rural lots off I-20 and US-411. Tell us about access when you call, such as a gate or a long drive, so the technician arrives ready.
Related services and reading
- Furnace RepairNo heat, clicking with no flame, a tripped limit or a blower that runs nonstop.
- Heat Pump InstallationNew or replacement heat pumps matched to the house, the ductwork and Alabama winters.
- Ductwork Repair and SealingDisconnected runs, crushed flex, sweating ducts and leaky joints in attics and crawlspaces.
- Heat Exchanger and CO Safety CheckA camera and combustion check for cracks, rollout and carbon monoxide risk.
- Sweating, leaking, crushed: duct trouble in older homesDuctwork guide
Need mobile home HVAC in Birmingham?
We answer 24/7. Tell us what the system is doing and we will tell you what happens next.