Root Cause Diagnostics: We don’t replace parts until we know why they failed. Amp draw testing, static pressure measurement, and refrigerant analysis—every repair starts with data.
AC Repair & Precision HVAC Engineering | Baytown & Mont Belvieu
Most contractors swap parts. We solve the root cause—backed by Manual J load calculations and custom fabrication.
Why Coastal Texas HVAC Requires Engineering, Not Just Service
In the humid, salt-heavy environment of the Texas Gulf Coast, standard HVAC service isn’t enough. Equipment fails faster here. Humidity penetrates deeper. If your contractor is just guessing at problems, they’re costing you money.
At Service Line Air & Heat, we are construction professionals. We don’t guess. We measure. From custom-fabricating our own ductwork to performing Manual J load calculations, we treat air conditioning as a science, not a commodity. Whether you’re a homeowner tired of high bills or a facility manager protecting critical assets, we diagnose the root cause so you only have to fix it once.
0%
faster than inland Houston
Standard equipment warranties don’t account for this—but our coastal-rated installations do.
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Guarantee
If we design it, we guarantee it will maintain 75°F in your home on the hottest August day—or we fix it for free.
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Residential, Commercial & Construction HVAC Services
Residential: Precision Comfort for Your Home
Your home is a system, and your HVAC unit is the engine. When that engine fails, you need more than a quick patch—you need a diagnostic expert.
Service Details
Commercial: Asset Protection & Uptime
For businesses in the industrial corridor, HVAC downtime means lost revenue. We specialize in maintaining heavy commercial equipment exposed to salt and sulfur.
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Construction: Built, Not Bought
We are not just service techs; we are builders. We partner with General Contractors and Custom Home Builders who demand precision.
Service DetailsWhy Service Line Air & Heat?
Ready for a Precision Solution?
Stop paying for guesswork. Partner with the engineers at Service Line Air & Heat.
Call Now (346) 533-0804
Meet Your HVAC Engineer
Michael Jarrell — Owner & Lead Engineer
Michael is a 2nd generation HVAC professional who started working alongside his father at age 12 in Southwest Louisiana. After graduating from Sowela Technical Community College, he earned his Industrial Electrician Certificate—a credential most HVAC technicians don't pursue—which allows Service Line to diagnose complex commercial systems, server room cooling failures, and electrical issues that other contractors have to refer out.
Michael moved to Baytown in 2015 and founded Service Line Air & Heat in 2022 with one mission: bring construction-grade precision to residential and commercial HVAC. When you call Service Line, you're not getting a parts-swapper—you're getting an engineer who measures before he recommends.
Michael moved to Baytown in 2015 and founded Service Line Air & Heat in 2022 with one mission: bring construction-grade precision to residential and commercial HVAC. When you call Service Line, you're not getting a parts-swapper—you're getting an engineer who measures before he recommends.
Industrial Electrician CertificateA2L Refrigerant Certified EPA 608 Universal Texas State HVAC License
Read Michael's Full StoryFrequently Asked Questions About Baytown HVAC
What is a Manual J load calculation?
Manual J is the industry-standard method for calculating exactly how much cooling (and heating) capacity your home needs. It accounts for square footage, window orientation, insulation levels, and local climate data. Without it, contractors are guessing—and oversized systems cause short-cycling, high humidity, and premature equipment failure.
Why does my AC run constantly in Baytown?
Constant runtime usually means one of three things: undersized equipment for your heat load, poor insulation allowing excessive heat gain, or refrigerant issues reducing capacity. In Baytown specifically, high humidity also forces the system to work harder. We diagnose which factor—or combination—is causing your problem before recommending solutions.
How do I prevent AC corrosion near the coast?
Coastal and petrochemical environments accelerate corrosion through salt and sulfur exposure. We specify equipment with enhanced coil coatings (such as Copeland Scroll compressors with coastal protection), recommend more frequent coil cleaning schedules, and can apply aftermarket corrosion inhibitors. The key is proactive maintenance—not waiting until you see visible damage.
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