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).
House of Heating Incorporated offers furnace service appointments that help keep your furnace in excellent shape and running efficiently for you all year long. Whether that’s discovering small issues before they become big problems, identifying potential safety hazards or making sure you’re staying in line with your manufacturer’s warranty, our experts have you covered. Our trained technicians complete furnace service with skill, inspecting a number of components in and around your furnace. In fact, our multi-point inspection can help make sure your system works smoothly throughout the winter.
Our technicians explain all of your options before beginning the repair, so you can decide whether a repair or replacement is best for you. Our No Surprises Pricing—including charging by the job, not by the hour—means the price we quote you is the price you pay. If you decide that replacing your furnace is the best course of action, we can install a new, high-efficiency model in its place.
To reset a gas furnace, start by making sure the pilot light has been extinguished. Next, turn down the room thermostat to its coldest setting, and cut the furnace's power from your home's circuit breaker. Cut the main gas supply to the furnace, but make sure that the gas line that leads to the furnace pilot is on. Light a match, and use it to ignite the jet of the furnace's pilot flame. Then restore the furnace power and main gas supply, and press and hold the furnace reset button for roughly half a minute.
If you believe that the ac not working or you’re getting little or no cold air, check these three things first. Make sure all the registers in the house are wide open. Then be sure the furnace filter is clean. Then go outside and clean off the condenser coils (Photo 2). If several registers were closed or the filter was clogged, the reduced airflow could have caused the evaporator coil to ice up and stop cooling your home. If you’ve changed the filter and opened all the registers and you’re still not getting airflow at the registers, deice the A-coil. Move the thermostat mode switch from “Cooling” to “Off” and move the fan switch from “Auto” to “On.” Let the blower run for at least 30 minutes or until there’s good airflow at the registers. Then turn the AC back on to test it. If it works for the next 12 hours, you’ve solved the problem.

Read what our many satisfied customers say about Moncrief. We consistently receive 5-star reviews from both our commercial and residential customers. Moncrief's legacy of comfort and trust, as well as our great team and customer service are second to none. Contact us today to schedule an appointment or inquire about our Total Comfort Service Plan. Moncrief Heating & Air Conditioning is the company to provide the services you need in Roswell and Marietta. Call us at 404-350-2300.
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.

Restoring or replacing an aging unit can get expensive. Invest in a new model if your utility bills are rising and you notice uneven air flow and temperatures throughout your property. If one room is cooler than another, consider a total replacement. If the air conditioner is relatively new and still within its age range, it's more cost-effective to get a contractor to repair it.
This information is not intended as an offer to sell, or the solicitation of an offer to buy, a franchise. It is for information purposes only. Read More Currently, the following states regulate the offer and sale of franchises: California, Hawaii, Illinois, Indiana, Maryland, Michigan, Minnesota, New York, North Dakota, Oregon, Rhode Island, South Dakota, Virginia, Washington, and Wisconsin. If you are a resident of or want to locate a franchise in one of these states, we will not offer you a franchise unless and until we have complied with applicable pre-sale registration and disclosure requirements in your state. Read Less Aire Serv is a registered trademark of Aire Serv LLC © Aire Serv | All rights reserved | All Aire Serv franchise locations are independently owned and operated.
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.
"Mike and crew were very prompt, very neat, and they quickly remedied the issue with our AC. Others, have tried to sell us on more than we actually needed. Mike was very honest about NOT replacing unnecessary parts. Superior was NOT the low bid, but they were close to it, and provided a very pleasant experience for this homeowner! I recommend you give Mike the opportunity address your Heating/AC issues and you can see for yourself why he has 5 Stars on all his reviews! Thanks Mike!"
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