Household Heating & Air Conditioning Question??? Help?

There are a lot of wrong answers here and really, so far, only one that is most likely correct. It is likely the fan limit. If the gas comes on, it isn't the stat. If the fan comes on when you turn the stat to on, again, it isn't the stat....which you indicate was just replaced. The limit may be stuck or it may need replacing. Either way, when you go to sign the papers, you stipulate that the furnace has to be repaired or you will be refunded the amount to replace it. Put it all in writing so it's legal. The other option is to call the seller and tell them the sale has to be delayed until the furnace is repaired. This is probably the best option because this will motivate the seller to do something NOW.. Whatever you decide, you would be wise to wait until the furnace is operating properly before you sign any papers.

Heating and A/C tech for 10 years.

The temperature setting could be off, an easy thing to do if it is a digital thermostat with lots of programming options. The thermostat could possibly be wired incorrectly also.

Either of these is and easy fix. Even if you have to hire a professional to replace your thermostat with a brand new one, you are only talking $100-200.

At this point in the closing process you will most likely lose your down payment since a house inspection is normally required in the first ten days after the contract is signed.

I say buy the house, the heater obviously works, it is just the thermostat giving you problems.

Yes there is something wrong with your A/C unit. The thermal sensor in not turning on the fan.

Basically the heating coils in the air handler turn on when signaled by the thermostat. Once the inside of the air handler senses the heat it triggers that fan to come on.

You problem has nothing to do with your thermostat. It is a small part located inside refered to by southern technician as a "clicks-on". This is a cheap and easy part to replace. Your maintenance person should have enough knowledge to replace this simple item.

If I was in your shoes with closing I wouldn't sign the papers until the seller agreed to pay for a professional service call and repair. It should be more that a few hundred dollars.

Ok lets get it straight. First of all sounds like you are talking about Gas heat. When the T-Stat calls for heat the gas turns on and heats up the heat exchanger. When the exchanger reaches a certain Temp. the fan starts and blows hot air thru the vents. Now when the Stat gets satisfied(reaches set point) the gas turnes off and the fan runs on to cool off the exchanger. When it cool to a certain temp. the fan shuts off. So what you are telling me is the gas turns on and heats the exchanger but the fan never starts. This sounds like it is the fan limit switch located in the furnace. That is the sensor which turns the fan on when the exchanger gets hot. I would suggest letting it run and make sure the fan does not start. The high temp limit switch will shut the gas off when the fan does not start. Then you know you must replace the fan limit switch. Some parts houses like Grainger sell generic ones that fit most models. They usually have 2 screws and set above your burners into the heat exchanger.

Possibly the maintenace person did the set up or back programming incorrectly,these thermostats need to know whether you have a heat pump or a furnace it could also be amiswired t-stat or abad fan relay as the realtor said,have the sller straighten it out for you,this should only be asmall obstacle in closing the deal and they will likely take care of it.

Check with the maintenance person to see if the work was permitted -- most cities require that adjustments such as those to HVAC units are permitted and authorized through the city/state laws of energy efficiency. See if the inspectors have even been out to approve the repair. If not, it will be something to bring up with your realtor and your local Code Enforcement agency through your city hall.

Hi, lot of wrong answers, its a faulty sail switch in the duct. This switch sences air flow as a safety, in the on position its manual in the auto its all called for by that switch, to keep from burning up your home, call a tech, good luck

The thermostat doesnt seem to be setup properly. It could need simple adjustment or could be more seroious (my hubby is a hvac tech.) Better to have them check it out before you sign the close. or else you may get stuck with a repair bill. Better to be safe than sorry.

as a Realtor, you are suppose to get b4 buying, a ''whole house inspection'' at either the cost of the seller or buyer. place an addendum in the escrow by the buyers broker to have the seller pay for the cost of the heater repair and also throw in a 1yr house warrantee pkg paid for by the buyer...this will insure your warmth, and the cost, (very little), will be bore by the seller.

....make sure your broker knows about all this problen your having b4 COE.

sounds like your heater coil is inop. im sure if you replace the thermostat everything would be fine. you can pick one up for under 50.00 and save you alot of headaches! good luck!