“Joseph, Justin and Robert were very professional and honest. If I could give them 10 stars I would. Outstanding job - left the house clean and fresh.”
A furnace that won't ignite, runs but doesn't heat, or short-cycles has a diagnosable cause. We carry ignitors and flame sensors on the truck - most fixes finish the same visit.
Thanks for reaching out. We've got your request and we'll be in touch shortly, usually the same day. Need us right now? Call (830) 587-5790 - we're open 24/7.
CO check every visit
Most no-heat calls come down to an ignitor or flame sensor - and we stock both on the truck, so most repairs finish the same visit.
We check the heat exchanger for cracks on every visit, because the part that keeps you warm is the same part that can leak CO.
Call (830) 587-5790Common failures: failed ignitor, bad flame sensor, faulty control board, or a tripped high-limit switch from restricted airflow. We carry ignitors and flame sensors on the truck - those are fixed same-day in most cases.
Check the filter first. A clogged air filter starves the furnace of airflow and trips the high-limit switch as a safety measure - which looks like the system died but is the system protecting itself. Pull the filter. If it's solid grey, replace it and try again. A new filter is $5-$20. A service call is $79.
The heat exchanger separates combustion gases from the air circulated through your home. A cracked heat exchanger can let carbon monoxide mix into that air. We check for it on every heating inspection. If we find a crack, we tell you clearly - no softening, no upsell - just what it is and what your options cost.
| Service | Notes | Price |
|---|---|---|
| Service call | Written quote - waived on repair | $79 |
| Common repair (ignitor/flame sensor) | Parts on truck, same-day in most cases | $150-$400 |
| Annual heating tune-up | Full safety + performance inspection | $99 flat |
| Comfort Club plan | Spring AC + fall heating check, priority scheduling | From $12/mo |
All prices flat-rate, all-in, written and approved before work starts.



When Gloria wanted a second opinion on her San Antonio home's aging system, Moorhead Service Company sent out technician Robert Rodriguez. Robert took the time to inspect the equipment, patiently explain what was really going on, and perform a thorough cleaning to help the system run at its best. Gloria got straight answers and honest service - exactly what every San Antonio homeowner deserves from an HVAC company.
See more real jobs →★★★★★I needed a second opinion on the AC issue. Robert was very helpful and explained the situation well. Thank you for all your patience!
Gloria, San Antonio · December 2025 · Verified on Google
“Joseph, Justin and Robert were very professional and honest. If I could give them 10 stars I would. Outstanding job - left the house clean and fresh.”
“Moorhead came out same day when our AC quit in July. Fair price, zero upselling - the tech was super professional. These guys are the real deal.”
“Used Moorhead for a full electrical panel upgrade. Upfront about pricing, did the work cleanly, passed inspection first try. Will absolutely use them again.”
Tell us what it's doing and we'll get someone out fast - same day in most cases, anywhere in Seguin. You get the price in writing before any work starts. Or call (830) 587-5790, day or night.
Thanks for reaching out. We've got your request and we'll be in touch shortly, usually the same day. Need us right now? Call (830) 587-5790 - we're open 24/7.
Flat-rate quoted before we start. Same-day available in most cases.