A great gas heater fixing guide assists you in determining what is wrong with the heating system based on its symptoms. That's what we do here with clear, uncomplicated info.
Fixing Common Gas Heating System Problems
Every year, thousands of Calgary homeowners ask, "What's wrong with my gas furnace?" If you remain in that scenario, this guide will equip hvac company you with information before you call a furnace business. Understanding is security versus being made the most of-- though many repair experts have sound ethics.
Note: This guide covers the most common problems, particularly those most property owners can quickly consult no tools or fundamental tools such as screwdrivers and a multimeter.
1. The Heater Won't Start
If absolutely nothing occurs when the thermostat is set above the home's present temperature, the most likely causes are these:
- The furnace switch (located on or near the heating system, looks like a typical light switch) is switched off and simply requires to be turned on, though the heating system may have a brief delay before beginning
- The breaker is off, and if the circuit continues to journey after it is turned back on, there is likely a wiring short in the furnace
- The thermostat isn't set to "heat," which is easy to check and treat
- The thermostat isn't working, and this is in some cases caused by a wire coming loose, so check the wiring connections
- The thermostat needs fresh batteries, if battery-powered, or it is bad and should be changed, a concern that can be detected utilizing an electrical multimeter that shows if a circuit is total
- The filter is unclean and need to be replaced or cleaned up, a problem that is especially real on more recent furnaces that are geared up to close down if the filter isn't enabling adequate air flow, a condition that can trigger serious mechanical failure
- The furnace's primary circuit board/control board is bad, an issue that can be diagnosed by an A/C technician is absolutely nothing else fixes the problem
2. Heater Blowing Cold Air
If the furnace won't produce heat, you can inspect to see if it is getting power by moving the fan switch from the "Automobile" position to the "On" position. If the fan begins, then the heater is getting power. The most likely problems then are:
- The gas is shut off, so check the gas dick near the heating system to ensure it is parallel to the gas line
- The gas control valve isn't opening and must be changed
- The ignitor is failing and need to be changed
- The draft motor isn't working or the fresh-air consumption is obstructed, maybe by snow or debris, and needs to be cleared
3. The Draft Motor Runs, Heating System Won't Start
The draft motor is likewise called the inducer motor. It pulls hot combustion gases through the furnace and out the exhaust stack. If it starts and after that the furnace shuts down, the cause might be:
- The motor or the board that controls it has actually failed and must be replaced
- A blocked air consumption or obstructed exhaust chimney (snow, debris and bird's nests prevail causes) should be cleared
- One of the problems gone over above with gas, gas valve and ignitor should be addressed
4. The Draft Motor Won't Start
The issue, in this case, is either that the motor is bad or the capacitor that supports it is bad. This video will assist you in repairing draft motor problems and what is causing them.
5. The Flame Begins, but the Furnace Shuts Down
If the burner starts making heat but quickly shuts off without warming your house, the flame sensing unit isn't working. If the sensing unit has corrosion on it, sanding it might work, though replacing it is a longer-lasting repair.
6. The Blower Won't Turn Off
If the blower motor runs all the time, there are 3 typical issues:
- The fan turn on the thermostat is set to "on" rather than "car".
- Relays in the control board are stuck in the closed position, so the blower is getting a consistent supply of electrical energy, and the control panel need to be changed.
- hvac companies The thermostat likewise has contacts that control power to the heating system, and they can be worn, so the thermostat needs to be changed.
7. Why Does the Furnace Keep Shutting Down?
If your furnace burner lights but the furnace quickly turns off, there are a couple of common problems that might cause this:.
- The heating system filter is unclean and should be cleaned up or changed.
- The flame sensing unit isn't working and must be changed.
- The thermostat is failing.
- While these are common, there are several other prospective causes best identified by a furnace service technician. This video offers in-depth protection to the issue of heating system short-cycling.
8. The Furnace Runs but Can't Keep the House Warm.
If your furnace is appropriately sized for your house, then it must keep your home warm even in severe cold. If it runs constantly however isn't offering sufficient heat, the likely causes are:.
- An unclean filter that should be washed (just if the washable type) or changed.
- The filter is the incorrect type for your heater and limits air flow, so need to be changed.
- The filter is set up backwards, a problem that can be examined by trying to find the arrows on the filter frame that reveal proper installation instructions with the circulation of air.
- Air ducts are dripping, in some cases producing telltale whistling noises, and it is time to have them sealed as advised by Energy Star.
9. The Heater Makes Loud Noises.
A noisy furnace is usually the outcome of:.
- The heater being a single-stage model that runs on high capacity all the time, so it's going to be loud.
- A bad bearing in the draft motor or the blower motor that need to be replaced.
- A leak in the furnace cabinet, sheet metal plenum or ductwork near the heating system that must be tightened up.
- A filthy filter, which can also trigger whistling.
10. The Furnace Leaks when AC is Running.
Water condenses on the evaporator coil in your furnace, and if it leaks onto the floor, the problem is more than likely a stopped up drain pan or drain line.
11. The Air Coming from the Heating System Smells Bad.
Foul odors from the heater are generally triggered by:.
- An extremely dirty filter that must be washed, if washable, or changed.
- A dead rodent or bird someplace in the system, typically a task for a professional furnace technician.
12. The CO Screen Going Off.
A carbon monoxide gas alarm must be taken seriously. Turn the furnace off at the thermostat. Don't go into the room where the heating system is located. Open doors and windows, and go outside. Call 911 from a cell phone outside your home.
How to Choose a Gas Heater Repair Work Expert.
Some house owners pick the cheapest repair service in Calgary, and the outcomes are typically poor. Cheap services are either simply beginning, so do not have experience or they have a bad credibility, so should give cheap prices to get tasks.
On the other hand, some services are overpriced. The very best method to discover quality furnace repair work at a reasonable rate is to get estimates from several of the top heater repair work companies in Calgary. Meet with each, discover their history and the experience of the specialists that will do the work. Choose a knowledgeable heating system repair work contractor with reasonable rates.