I have a 12 year-old Williams wall furnace. In the past, the heater would heat my 1,000 sq. ft. home completely (although it would take a few hours). Now, even though I'll have it runnig all day, it does not warm the entire home. I know the heater is not emitting the same amount of heat as it used to. Any one know what might be causing this problem or howo to fix it? Thanks
A couple thoughts. On some of the wall furnace gas valves there's a knob that you can set for low fire or high fire. If your valve has this make sure it is in the high fire setting. Is the wall furnace controlled by a wall thermostat or a knob on the heater? With the thermostat turned all the way up like to 90, does the burner and fan continue to run or is the burner short cycling. Is the fan clean and running up to speed. Some of the Williams wall furnace had a two speed fan motor so when the fan came on at first it would run on low speed. As the heat exchanger got hotter the internal fan switch would switch it to high speed. Outside of that you would need a monometer to check the manifold gas pressure.
SOURCE: Lakewood 792/JR heater running w/o heat
Hi Spybotics. I have the same problem and I traced mine down to a burned out over-heat fuse link. Check out my recent post. My guess is that you are having the same problem as me. It's not hard to tell - just take off the rear panel and test the link (looks like a small resistor in line with the element) with an ohm meter. Open circuit means burned out fuse link. DO NOT bypass the link, as an extreme fire hazard will exist without it.
SOURCE: Inefficient (big, yellow flame) on wall propane heater, using up propane too fast
A clue to what could be wrong is that you mentioned it took 10 minutes for the pilot to go out. It could be your gas valve. Get a technician in to check your gas pressure both before the gas valve and after. Have them check it as the water heater is running.
SOURCE: question on a day and night gas forced air heater
it very well sounds like your fan switch , does your fan work at all, like in ac mode on by turning the fan on/auto switch on the thermostat to ON. If the fan does come on its the more and likely the limit switch. if it doesnt come on it could be the motor or the run capacitor. the limit switch has a dial on it that as it heats up it spins clicking on at a desired set temp ussually about 120 to 150 degrees F. turning on the fan if the fan doen't come in the the next setting clicks off the gas valve turning off the burners ussually set at about 220 degrees F. now if the fan is working when the heater is satisfied there is a setting at about 90 deegrees F. that shuts the fan off hope this helps
SOURCE: Electricity cost per hour
1500w / 1000w = 1.5 kwh. Every hour you run (assuming it is at 100% peak power) you use 1.5 kw. Just multiply that rate by how much it your power company charges per kwh.
Estimating high at 10 cents per kwh it would be $1 for every 10 hours you run the heater, or $2.40 per day, or about $72 per month if you ran it 24/7 for 30 days.
It is FAR cheaper to use these types heaters to heat one small room than an entire apartment or house if you are only in one room the majority of the time.
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I put my thermostat on 90 degrees and leave for 6 hours and the house is barely heated to 70 degrees
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