HVAC Contractors Denver
Posted on January 30, 2018
Your central air conditioner is a much more complex system than you may realize. Good air conditioner repair services have several things in common, the most important ones among them being the need to provide quality service and AC heating repair for customers who own different types of air conditioners which need repair and maintenance. Technicians who work with air conditioners undergo a comprehensive and lengthy training to be able to install and repair them. Homeowners trust Denver for an accurate assessment of their needs, and professionally executed service.
We depend on our air conditioners at home and work places to keep things cool so that we can perform at our best. Before you decide to install, upgrade or replace your air conditioning, make sure you talk to a qualified Denver HVAC professional about the best options for your climate control system. It's always best to seek professional help so that you know your furnace and/or air conditioner will provide optimum protection and durability for an affordable price.
DenverTo fix household things that break, you need to know how it works, what can go wrong, how to identify the problem, as well as the steps to fixing it. Here's what you need to know about gas furnace repairs.How Does It Work?Natural or propane gas from an outside source is piped to the furnace where it is burned to produce heat. Usually a fan-driven forced-air distribution system blows the warmed air through ducts that vent into the various rooms of the house. Older gas furnaces use a standing-pilot ignition. Maintenance involves turning off the pilot each spring and relighting it each fall. Newer, more efficient gas furnaces use an electric spark to light the gas as necessary.What Can Go Wrong?Most gas furnaces are quite reliable. What are the symptoms of problems? The furnace may not produce heat or may not produce enough heat. The pilot light may go out repeatedly or refuse to light. The thermocouple may be faulty. The pilot may light but not ignite the burner. The furnace may be noisy. There are some maintenance and a few minor repairs that you can make. However, major service should be left to a trained technician.Fix-It TipTo minimize problems with your gas furnace, take time each month to check the air filter and clean or replace it if necessary. Once a year, clean the blower blades, lubricate the blower motor, and inspect the belt.How Can I Identify the Problem? If there is no heat, check the electrical service panel for a burned fuse or tripped breaker. Relight the pilot light (see below).If there is not enough heat, adjust the burner air shutter (see below); and clean the burner ports (see below).If the pilot light does not light or does not stay lit, clean the pilot orifice carefully with a toothpick, test the thermocouple and replace it if it is faulty (see below).If the flame flickers, adjust the pilot (see below).If there is an exploding sound when the burner ignites, adjust the pilot to a higher setting and clean the pilot orifice and the burner ports.If the burner takes more than a few seconds to ignite, clean the pilot orifice and adjust the pilot light.If the burner flame is uneven, clean the burner ports. If the burner flame is very yellow, clean the burner; open vents in the furnace room to provide more air; adjust the burner air shutter.If the furnace makes a rumbling noise when the burners are off, clean the burner and adjust the burner air shutter.If the air is too dry, wash or replace the evaporator pad if you have a humidifier; test the humidistat; and adjust the water-level float to raise the water level.If some rooms are too cool and others too warm, the distribution system may require balancing. Refer to the Forced-Air Distribution Fix-It Guide at FixItClub.comFix-It TipBe sure your filter is the right size for your furnace.What Parts, Materials, and Tools Do I Need?Some replacement parts for gas furnaces are interchangeable (filters, fasteners) and available at your local hardware store. Others, such as burners and controls, must be purchased from the manufacturer or aftermarket supplier or through a heating equipment supplier listed in your local telephone book.The primary tools you will need for fixing a gas furnace include these:* Screwdrivers* Wrenches* Pliers* Wire brush* MultimeterWhat Are the Steps to Fixing It?To light the pilot on a standing-pilot (always on) ignition system, follow the lighting instructions located near the control. Otherwise, try these steps:Light the pilot:1. Press and hold the pilot control knob to start the pilot. Set the control knob to the pilot position. Hold a long match under the pilot gas port.2. Press the control knob; the pilot should light. Hold the control knob down until the flame is burning brightly (about 30 seconds). Release pressure on the knob, and turn it to the on position.3. If the pilot goes out when you release the control knob, try relighting, holding the control knob down longer. If the pilot again goes out, check the thermocouple (below).Adjust the pilot:1. Remove any cap covering the pilot adjusting screw on a combination control. 2. Turn the adjusting screw counterclockwise to increase the flame or clockwise to decrease it. It is correctly adjusted when the flame envelops the thermocouple bulb by 1/2 inch and appears dark blue with a small yellow tip.Test and replace a thermocouple:1. Hold the control knob to pilot and light the pilot as above.2. Unscrew the thermocouple fitting with an open-ended wrench.3. Set a multimeter to the DVC (lowest voltage) scale.4. Clip one multimeter lead to the end of the thermocouple tube nearest the pilot and the other lead to the fitting on the other end of the tube.5. If the multimeter shows a reading besides zero, the thermocouple is functioning. Replace the thermocouple tube.6. If there is no reading, you will need to clean or replace the thermocouple following steps 7 through 11.7. Release the control knob and shut off the main gas valve on the gas-supply pipe that leads into the burner. Shut off power to the burner at the electrical service panel .8. Remove the thermocouple from its mounting bracket.9. Wipe the combination control clean and install a new thermocouple, tightening it by hand, then give it a one-quarter turn with a wrench.10. Insert the thermocouple into the pilot bracket, being careful to not crimp the tubing.11. Turn on power to the furnace and relight the pilot (above).
10 Steps to Increase Your HVAC Business "Profit Ability"This article will help to explain what the different parts of a home Heating, Ventilating and Air Conditioning (HVAC) system are and help you understand what work is being specified on an HVAC repair price list. For the purposes of this example, we will look at the components of an all-electric split heat pump system most typical in home HVAC installations.The heat pump itself is the outdoor portion of the system. It consists primarily of the compressor, condenser coil, and fan. It also houses the reversing valve and electrical contractors. This is where your service technician will hook up his pressure gauges to see if there is the correct amount of refrigerant in your system. If refrigerant is needed, it is installed here through a port. The bottle containing the freon will be weighed by a scale before and after filling your system to determine how much was used, and you would be charged by the pound. If there is a refrigerant leak in the coil it can usually be repaired, but all the refrigerant may have to be pumped out and reinstalled. Sometimes the fins on the condenser coil will be bent up due to hail damage or may be dirty. These can be combed out again or cleaned for little cost. If the fan or compressor do not run, or the reversing valve does not change the system from heating to cooling, it is possible that only a contactor may need to be replaced. These contactors, thankfully, are low cost components. But if a fan motor or compressor needs to be replaced, it can be more expensive. The compressor is the most expensive component and can be several hundred dollars to replace. If the condenser coil is badly damaged or the compressor needs to be replaced, it might be time to consider a new heat pump, particularly if much more energy efficient options are available.Indoors you have the air handler, which consists of the evaporator coils, indoor fan, air filtration system, humidifier, and a plenum for air vents. One of the most expensive repairs here can be for an under-slab plenum that has rusted out; this can sometimes require that part of the slab be demolished and reconstructed. It is unusual that anything goes wrong with the evaporator coils, but sometimes they need to be cleaned, which is an inexpensive operation. If the indoor fan motor needs to be replaced, it can be moderately costly. The air filtration system and humidifier usually only require simple repairs, replacement of filters, floats, small motors, etc. There are also some control electronics including the thermostat; these can range in price from inexpensive to moderately costly. If the heat pump outside needs to be replaced, it is possible that you may want to replace the indoor air handler also if it will help provide you with the energy efficiency of a new system. Hopefully this will help you to have a better idea of what you are looking at next time you get a repair bill for your HVAC system. Don't be afraid to ask questions of your service technician, and if you don't feel comfortable with any aspect of the repair or if it's very expensive, be sure to get a second opinion before going forward.
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