We Make Your Air Better
Mobile & Modular Home HVAC in Tyler, TX
Manufactured homes do not use the same HVAC equipment as site-built houses, and that is not a marketing distinction. Mobile and modular homes are built to HUD manufactured housing standards, their heating equipment requires sealed combustion, and their ductwork runs beneath the floor in a belly-board enclosure rather than through an attic or crawlspace.
Getting that wrong is a safety issue, not just a comfort one. 903 HVAC has worked on manufactured home heating and cooling across Tyler and East Texas for over 40 years, and our licensed technicians (TACLB#39819E) install equipment rated for these homes.
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A Genuine Specialty
Why Manufactured Homes Need Different HVAC
Any licensed contractor can technically work on a mobile home system. Whether they should is a different question, because the requirements genuinely differ from a site-built house in ways that affect both safety and performance.
- HUD code compliance rather than standard residential building codes
- Sealed combustion furnaces in downflow or horizontal configuration
- Belly-board ductwork routed beneath the floor of the home
- Compact utility closets that limit what equipment will physically fit
The venting requirement is the one that matters most. Sealed combustion chambers and specific venting configurations are what keep carbon monoxide out of the living space, which is why a furnace not rated for manufactured housing is both a code violation and a serious hazard.
The ductwork is the one that causes the most day-to-day trouble. Belly-board ducts develop leaks, come apart at crossover points, take on moisture damage, and get chewed through by rodents and insects. That is why we inspect underneath the home on every service and maintenance visit rather than only when something has clearly failed.
Heating and Cooling
Our Mobile & Modular Home HVAC Services
Each side of the system has its own page covering repair, installation, and maintenance for manufactured homes.
Mobile & Modular Home Air Conditioning
Repair, replacement, and maintenance for manufactured home cooling. Covers the common failures we find - refrigerant leaks, compressor problems, frozen coils, blower burnout, and belly-board duct damage - plus the full replacement process from evaluation through commissioning.
Mobile Home ACMobile & Modular Home Heating
Repair, furnace replacement, and maintenance for manufactured home heating. Covers ignition failures, blower issues, thermostat faults, cracked heat exchangers, and duct damage, plus code-compliant installation of furnaces rated for manufactured housing.
Mobile Home HeatingWhat We Look At
Three Things We Check on Every Manufactured Home
These are the areas where mobile and modular home HVAC differs most from a site-built house, and where problems tend to hide.
Equipment Rating
Is It Approved for This Home?
We confirm the installed equipment is actually rated for manufactured housing. If a previous installer fitted a standard residential furnace, that is a code violation and a carbon monoxide risk, and we will tell you plainly. See mobile home heating.
Belly-Board Ductwork
The Usual Culprit
Ducts beneath the floor are the most common source of poor cooling and heating in manufactured homes. Disconnected crossovers, moisture damage, and rodent intrusion all show up here. We inspect underneath on every visit rather than waiting for a complaint.
Sizing and Fit
Load, Not Guesswork
Manufactured home construction creates different cooling loads than a site-built house of the same square footage, and the utility closet limits what will physically fit. Both get worked out before we quote a replacement system.
Not sure whether the equipment in your home is the right type? Call us and we will come look at it.
Talk It Through: 903-393-1044Your Trusted Partner
Why East Texas Manufactured Homeowners Choose 903 HVAC
Manufactured Housing Expertise
Over 40 years working specifically with mobile and modular home heating and cooling equipment, not just occasionally.
American Standard Customer Care Dealer
We install American Standard equipment rated for manufactured housing applications.
Woman-Owned and Family-Run
Karen and Larry Lacaze answer for the work their team does.
Licensed and Accredited
Texas License TACLB#39819E, BBB Accredited, Lindale Area Chamber members.
Protect Your Investment
Essential Comfort Plan
Because belly-board ductwork degrades quietly, regular visits matter more on a manufactured home than most owners realize. Our Essential Comfort Plan keeps them scheduled.
- 2 Visits per Year (Spring and Fall)
- Priority Service
- 10% Discount on Parts and Service
- IAQ Product Inspection
- 100% Satisfaction Guarantee
Related Services
Other Ways We Help Manufactured Homes
Equipment is only part of what makes a manufactured home comfortable in East Texas.
- Sheet metal fabrication - custom duct components when belly-board sections need replacing
- Blown-in insulation - reduces the load on equipment working in a lighter-built envelope
- Indoor air quality - filtration, UV, and humidity control for tighter interior spaces
- Ductless mini-splits - an option for additions and rooms the main system struggles with
- Central air conditioning - our services for site-built homes
Our Service Areas
Serving Our Neighbors in Tyler & East Texas
903 HVAC proudly serves Tyler and surrounding communities with reliable heating and cooling service. We've been part of this community for over four decades, and we're committed to keeping our East Texas neighbors comfortable year-round. Our technicians know the area, understand local climate challenges, and respond quickly when you need us.
Serving Our Communities Around
Not Sure if We Service Your Area?
Don't see your area listed? Give us a call - we serve more East Texas communities than shown here and may be able to help.
903-393-1044 View All Service AreasOur Customer Reviews
Answering Your Questions
Frequently Asked Questions About Mobile & Modular Home HVAC
Yes, in several important ways. Mobile and modular home systems must meet HUD manufactured housing standards rather than standard residential building codes. The ductwork is routed beneath the floor in a belly-board enclosure, the equipment must fit in more compact spaces, and the construction characteristics create different heating and cooling load requirements.
No. Using a furnace not rated for manufactured housing is a serious safety hazard and a code violation. Mobile home furnaces have sealed combustion chambers and specific venting configurations that prevent carbon monoxide from entering your living space. Always use HUD-approved equipment.
Belly-board ductwork is one of the most common sources of heating and cooling problems in manufactured homes. These ducts can develop leaks, become disconnected at crossover points, sustain moisture damage, or be compromised by rodents and insects. 903 HVAC inspects ductwork beneath the home during every service and maintenance visit.
Technically, any licensed HVAC contractor can. However, manufactured home systems have unique requirements that differ from site-built homes, including HUD code compliance, sealed combustion requirements, and specific ductwork configurations. At 903 HVAC, we have over 40 years of experience working specifically with mobile and modular home equipment.
903 HVAC We Make Your Air Better
Manufactured homes deserve contractors who know the difference between HUD-rated equipment and whatever fits in the closet. 903 HVAC has been that contractor for mobile and modular homeowners across Tyler and East Texas for more than 40 years.
Woman-owned, family-run, and licensed under TACLB#39819E. Free estimates on replacement systems and discounts for veterans, first responders, healthcare workers, and teachers.
