A contactor is a $25 mechanical relay that uses low-voltage power from the thermostat to switch 220-volt high-amperage current to the compressor and condenser fan. AC contactors can wear out and are at the top of the list of common air conditioning service failures. Even if your contactor is working, it pays to replace it every five years or so. Unscrew the old contactor before removing the wires. Then move the wires to the new unit (photo 6).
Check your thermostat. First, ensure it is on the right setting. Is it set to “fan” by mistake? Second, check the location of your thermostat. Is there a heat source that could be affecting the reading? Is it located near a fan? If so, the your thermostat might be reading the temperature incorrectly. Investing in a Smart-thermostat is a great option, this will allow you to check & adjust your settings remotely.  

Furnaces and thermostats are not mix-and-match appliances. Using the wrong type of thermostat with a furnace will cause operating problems and can be dangerous. Although thermostats look similar, they are designed very differently. There are numerous types of heating systems and thermostat systems and they need to be coordinated for safe and proper operation. There are three types of thermostat systems used today: millivoltage, low voltage, and line voltage.​
Our technicians have many years of experience repairing furnaces and will make sure your home is back to keeping you warm and cozy in no time. From training and certifications to our reputation for completing the job right time and time again, you can be sure that B & B Heating & Cooling’s furnace repair technicians will have your problems taken care of and your furnace operating smoothly. Whether it’s emergency furnace repair or service you can schedule some time in advance, our team can provide you peace of mind, knowing that your furnace is in experienced hands. Need a furnace repair? When performing a repair, it's crucial to vet professional HVAC contractors.

I just finished fixing some skylights on my parent's house. They had the bubble type that started leaking after the roof was resurfaced. After investigating it carefully, it became apparent that when the roof was resurfaced, the edges of the skylight were covered with a sealant. (To help prevent leaks perhaps?)The problem was that this coating sealed up the weep slots along the perimeter of the aluminum frame. These slots are key to proper operation of the skylight. The skylight dome isn't sealed to the aluminum frame. The frame is designed with channels that direct any water that manages to flow between the bubble and the frame back out through weep holes.Make sure those weep holes are clear! They can be blocked by dirt, ice, or a well-intentioned roofer.
HVAC equipment is estimated to last about 15 to 20 years. Yet over the years, parts go out and need to be repaired. Heat sensors, exchangers, and ducts can become worn out. Air conditioning motors may need repairing from time to time. For repairs to your heating and air conditioning systems, and even general maintenance, let HomeAdvisor help. Enter your zip code and let us connect you with prescreened HVAC repair services near you.
If you need a furnace repaired or an air conditioner serviced, we'll send a local technician out to diagnose the specific problem and recommend solutions for you and your family. There will be a diagnostic fee for the visit, and any specific repairs will be an additional charge. If replacing your system is the best solution, the fee for the diagnosis will be credited toward the purchase and install of a new system.
Your furnace's flame sensor is essentially a safety mechanism. As a thin metallic rod in front of the flame inside the unit, it's sole purpose is to confirm that your gas valves only open when a flame actually exists to burn that gas. When the flame sensor stop working, on the other hand, gas leaks can occur. To repair your furnace's flame sensor, expect to spend between $80 and $250. Even a full replacement of this part typically does not go above that range.

"Very impressed. Returned call within 24 hours. They came out the same day I spoke with them and made the repair within 25 minutes. Very low service call fee. I had another repair service out two weeks earlier and after 3 service calls and the central air still not fixed and temperatures in the high 90's, it was such a relief to have a company identify the problem, have the necessary part with them and fix the problem."

HVAC Repair

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