HVAC Basics

Precision Air installs and services all the top brands. Get to know your terms here and let us cater to all your HVAC needs!

Air Conditioners: How Does It Work?

An air conditioner cleans, circulates, cools and dehumidifies (removes undesirable moisture from) indoor air. A filter cleans the air by trapping dust and other small particles. An air handler (blower built into the system) circulates it, while the cooling and dehumidifying are accomplished by a process called refrigeration.

Refrigeration

Refrigeration cools a home by transferring heat inside a home to the outdoors. All central air conditioners employ two main units in this process – the indoor unit and the condensing unit.

Indoor Unit

This unit removes undesirable indoor warmth and humidity. It includes the filter, the air handler, and the evaporator coil. The air handler blows filtered air through the evaporator coil. The evaporator coil is kept cold by the circulation of a substance called a refrigerant. Air that travels through the evaporator coil gives up heat (the colder coil absorbs it) and humidity (moisture condenses upon contact with the cold surface of the coil). The cooler, drier air that continues through the air ducts is vented throughout your home to maintain your desired comfort level. Depending on the structure of your home, the ductwork may be above the ceiling or below the floor.

Condensing Unit

Outdoors, at the condensing unit, an air conditioner releases the heat that was captured indoors. The same refrigerant that absorbed the heat indoors at low pressure is now pressurized by the compressor and is circulated through another coil, the condensing coil. In the condensing coil, under high pressure, the refrigerant releases its heat very quickly, making the coil itself hot. A fan blows across the coil, cooling its temperature down and transferring the heat to the outside air.

Furnace: How Does it Work?

The furnace is the most important component of a central heating system. It houses all the working parts. So when you replace the furnace, you replace the vital operating parts of your heating system. It is by choosing from among the different models and brands of furnaces available that you determine the quality and cost of your business’s heating for years to come.

Furnace

The Furnace is part of a forced-air system. Warm air is forced or blown, through a system of air ducts to each of the rooms in the office. Office air drawn into the furnace passes through a filter, where dust and other small particles are trapped. A blower unit blows the filtered air through the furnace, and the air absorbs heat.

Gas Heat

If it is a gas furnace, the heat is supplied by the burning of natural gas. A mixture of gas and air flow into the burner and is ignited by the pilot. Combustion occurs, and warm air from the burner flame rises to fill a chamber known as a heat exchanger. The heat exchanger becomes hot. Office air passing around the heat exchanger absorbs that warmth, continues into the air ducts and the heat is distributed through the business.The by-products of combustion pass upward through a venting system and escape through a vent in the roof.

Electric Heat

If the furnace is electric, heat is generated by an electric heating element. Electric current traveling through the element creates heat. By the heat transfer processes called conduction and convection, heat is transferred into the air stream and flows through the air ducts into the rooms of the business.

Thermostat

Whether you heat your office with gas or electricity, a wall thermostat will be installed. This measures room temperature and turns the central heating system off or on as the temperature rises or falls to designated levels. Careful location of the thermostat is an essential consideration in maintaining maximum comfort levels in your business.

Verified Google Reviews!

Glen Pratt
Glen Pratt
22:48 04 Jan 18
I am new homeowner and had never got a heater inspection/tune-up... I scheduled one with Precision and had a great experience. My technician Steve was timely, professional, (funny), and honest. He showed me a few ways to increase the life of my system while also improving the quality of my air and lowering my utility bill. I recommend Precision Air for sure.read more
Corey Cronk
Corey Cronk
18:59 05 Jan 18
Precision (Mike + Team) were all a pleasure to work with. Work was done quickly with no mess and everyone was very professional. I will surely share my experience with friends and family. Do not hesitate to work with Mike and his team.read more
Nadja Frist
Nadja Frist
20:50 17 Jun 16
Were so glad we decided to go with Precision Air Heating & Cooling for our new AC and duct work, we couldn’t be happier. They sincerely care about their customers, have pride in their company and their work, and stand behind it. Without a doubt they are the best of the best. Any questions or concerns we had were addressed. We can’t say enough about how impressed we are of their knowledge, professionalism and care for us as clients. Precision Air Heating & Cooling, you are top notch, truly the best! Thank you for all that you’ve done!read more
Charlie Strickler
Charlie Strickler
19:53 24 Oct 16
I hired these guys to service my old boiler and radiator heating system. The unit was made in 1987 so I was expecting to have to get a new unit. While it does need to be replaced eventually I was happy that they didn't make me feel like I had to. They just serviced it and gave me a recommendation for a new one. They seem like honest guys. Thanks.read more
Exposurein
Exposurein
20:46 05 Mar 15
You installed new high efficient gas tank-less heater this winter and I wanted to wait to give a full review. Everything with the installation was very easy from Tim making the appointment showing up on time and being very helpful through our decision process. He did not try to get us to buy with all kind of specials like some of the other companies. One large company would not leave my home unless we signed that day. We had to throw them out all they were concerned with was selling us a heater! When Lou the installation manager came out to do the materials list he was polite and attentive to our needs. The men did not make do or improvise because they had all the right parts and it looks much better than my neighbors who used another local company. Greg did a great install on our oil to gas conversion. I could not believe that small wall hung unit would heat our home. Well it not only heat our home and hot water it reduced our costs a whole bunch! We normally used 900 gallons of oil at an average cost of 3.75 for yearly budget of 3400. This winter we only spent just over $600. Thank you Precision Air for guiding us on our new tank-less heating system and being so professional. read more
Bob Weber
Bob Weber
20:17 15 May 18
Precision Air was professional, courteous and did a great job. Would recommend them to anyone doing a oil heat to natural gas/central air conversion. As is usual there were challenges with an old house and they knew exactly what to do. We're lovin' the nice, cool, allergen free environment on these surprise 90* days!read more
Leslie Delhaie
Leslie Delhaie
16:41 05 Jun 18
We used Precision Air for a new/replacement installation. Precision Air was one of four installers that we met with and received pricing from. They were not the cheapest of the quotes but we chose them based on all factors. The entire process from the initial phone contact to the completion of my PECO rebate forms after the installation was handled with friendly professionalism - almost as though we were a friend of the family (we were not). And although they were not the cheapest of those interviewed, they gave us the most value for our dollar and their cost was well under (less than half of) our highest quote for a comparable system.read more
Craig Baker
Craig Baker
09:29 09 Aug 18
Very happy with Precision Air Heating and Cooling. My AC went down and I had to replace the system and furnace. Mike the owner was very responsive and informative. Got a very good system at a fair price with a solid warranty. Big props to his hardworking crew who did a great job with the installation.read more
Kurt Christensen
Kurt Christensen
00:46 02 Oct 18
Precision provided us with a perfect experience. They right sized a central air conditioning system for us. The system is quiet and what an upgrade from the older single stage units. The Precision team that estimated the job, planned the job and the install team all exhibited the highest level of professionalism. Everyone involved was considerate, polite, and perfectionists. They left our house in a clean condition. We simply could not be happier. They truly care. Very nice in this day and age.read more
See All Reviews

News

Save More | PECO Energy-Star® Rebates

  PECO rebates are an easy way to receive additional savings when you install ENERGY STAR® certified high-efficiency heating and air conditioning equipment.  This could save you hundreds! We make it easy to know the eligible water heating and gas systems. Qualifying...

read more

We’re A 2018 HomeAdvisor Winner!

  Recently HomeAdvisor awarded us with the 2018 WINNER achievement award.  Thanks in part by also hitting the 100+ verified reviews mark; we are just as happy about that as well.  This combined with an A+ Rating with the Better Business Bureau and 25+ Years in...

read more

 

OPEN Mon. to Fri. 8 to 5

Precision Air Heating & Cooling
675 Tower Lane
West Chester, PA 19380