What You’ll Learn
What does a propane HVAC service include?
A propane HVAC service includes a full system inspection, during which your technician will check combustion levels, heat exchangers, gas pressure, and safety valves.
Together, these checks help prevent gas leaks, improve efficiency, and extend the life of your heating system.
In this blog:
This blog was updated April 2026.
Roughly 6 million American households rely on propane heat.
If you’re one of these people, then you need to ensure you invest in propane HVAC service so your heat system works properly when you need it most.
But what’s involved with a propane heater service call? Find out what you can check regularly, and what you need a professional technician to inspect.
1. Combustion Analysis
Your combustion analyzer measures the composition of your propane HVAC system’s outgoing flue exhaust. This ensures your home’s system is burning clean.
Your technician will be able to do a thorough inspection of your combustion analyzer.
A combination analyzer is needed to know how efficiently your system is running.
Be sure to ask your technician ahead of time if they’ll check this for you ahead of time, so they bring the proper equipment with them to the job.
When they arrive at your house, you can expect them to inspect for any signs of a blockage over the exhaust flue and the exterior pipe.
Inside your home, the technician can drill into the PVC flue, inserting the probe of the combustion analyzer. Every manufacturer has specific recommendations on what’s an acceptable result of CO. The lower, the better.
2. Heat Exchanger and Burners
One thing you can check on your own is your heat exchanger and burners.
You’ll want to look for excessive amounts of rust, along with any holes or cracks you might see. You also need to remove dirt and debris that might cause improper combustion.
It’s still best to call in the pros so they can clean your system for you and make any necessary repairs. They have the tools and experience necessary to get the job done right.
3. Inspect the Flame Sensor and the Igniter
You can also check the igniter and the flame sensor for any signs of wear. You’ll want your technician to polish the flame sensor using steel wool or even a wire brush, removing any built-up dirt or soot.
If they’ve shown you how to do this and you want to remove the buildup your own in between service calls, then add that to your checklist.
4. Temperature Rise
It’s important to understand that high-energy systems have natural temperature increases when working properly.
Check for temperature rises in the middle of the normal range, which is 40 to 70 degrees.
If the number is on the lower end of the spectrum, it might mean your system is producing an excessive amount of condensation, which can lead to rust. When functioning on the higher end, your heat exchanger is at a greater risk of cracking.
Should you notice anything out of the ordinary, be sure to contact your propane tank service company immediately.
5. Inspect the Gas Pressure
It’s important to remember that propane furnaces are different from natural gas systems in that they operate at different pressures.
If possible, measure the value pressure on both sides. Ensure it’s within your manufacturer’s specifications.
Ask your technician to install sensitivity safety values inside of your propane system.
When you install a low-pressure cut-off, your furnace will shut down if your gas pressure is too low. This also reduces how much excess soot is in your heat exchanger. Excess soot reduces your system’s efficiency.
6. Inspect For Gas Leaks
You might be able to use a soap and water solution to look for leaks, but this may result in false positives.
Electronic leak detectors are best.
Check with your propane tank service technician to find out which leak detectors are best for your needs, and always keep carbon monoxide detectors in every room of your home, especially 5-20 feet from your furnace.
7. Check the Drain
The drain is one of the most neglected parts of your propane HVAC system. The drain trap for condensation should always be checked and drained.
If you’re unsure where it is, how to check it, or the best way to empty it, ask your propane technician to show you during your next service call.
Since the trap fills with dirt, it can cause water to back up into it. This can lead to your unit shutting down, especially when it’s running hardest.
Schedule Propane HVAC Service Today
Routinely completing a propane HVAC service for your system, will keep it running all winter long.
Failure to properly service your HVAC system could lead to your furnace malfunctioning or even a potential gas leak.
Remember to service your HVAC system at least once a year to keep it running properly. Checking any of these items more frequently ensures your system keeps running efficiently.
Kauffman Gas is your one-stop shop for all your propane HVAC needs.
We offer everything from delivery to installation and service.
Switch today and receive a gallon-for-gallon credit for the propane you’ve already paid for with your current provider.
FAQs
How often should I service my propane HVAC system?
You should schedule a professional propane HVAC service at least once a year, ideally before the heating season begins.
Regular maintenance keeps your system efficient and helps prevent breakdowns during the coldest months.
Can I perform any propane heater maintenance myself?
Yes. You can handle basic tasks like checking for visible rust, cleaning the drain trap, and inspecting your exhaust flue for blockages.
However, anything involving gas pressure, combustion testing, or leak detection should be left to a licensed technician to ensure your safety.
What are the signs my propane furnace needs repair?
If you notice uneven heating, unusual noises, soot buildup, or frequent shut-offs, your system may need professional attention.
These symptoms can indicate a clogged burner, damaged heat exchanger, or improper pressure.
Why is my propane heater using more fuel than usual?
Higher fuel use often means your system isn’t running efficiently. Dirty burners, clogged filters, or low gas pressure can cause your heater to work harder.
A yearly tune-up and proper combustion analysis will restore efficiency and reduce propane consumption.
How do I know if there’s a gas or carbon monoxide leak?
You should install carbon monoxide detectors in every room, especially near your furnace.
If you ever smell gas, hear hissing, or your CO detector alerts you, turn off the system immediately, leave the area, and call your propane service provider. Never try to fix a suspected leak yourself.
What temperature rise should my propane furnace have?
Most propane furnaces should show a temperature rise between 40°F and 70°F. Anything outside that range could point to efficiency or combustion issues.
If it’s too low, condensation and rust could form; if it’s too high, the heat exchanger could crack.
Is professional propane HVAC service worth it?
Absolutely. A professional technician has the right tools to analyze combustion, test pressure, and detect hidden leaks.
Routine service keeps your system safe, reduces energy costs, and extends the lifespan of your equipment.