Denver HVAC Repair

MacDonald-Miller has developed a unique program to help the Service Department continually evaluate the satisfaction of customers and make ongoing improvements to the level of service provided. Our Customer Experience Commitment encompasses the following elements that help maintain and increase the quality of service delivered by the MacMiller team.
At Miller's Air Conditioning & Heating we take pride in being a high-quality HVAC Company serving the Tri-Valley area. We have been Livermore’s #1 choice for HVAC repair and service since 1960, so you can trust that we know how to get the job done right the first time. We’re a family-owned business that puts each of our customers needs ahead of our own, so if you need comprehensive furnace; air conditioning, or general HVAC services, give us a call at (925) 583-6387 today and we’ll take care of the job!

Free cooling systems can have very high efficiencies, and are sometimes combined with seasonal thermal energy storage so that the cold of winter can be used for summer air conditioning. Common storage mediums are deep aquifers or a natural underground rock mass accessed via a cluster of small-diameter, heat-exchanger-equipped boreholes. Some systems with small storages are hybrids, using free cooling early in the cooling season, and later employing a heat pump to chill the circulation coming from the storage. The heat pump is added-in because the storage acts as a heat sink when the system is in cooling (as opposed to charging) mode, causing the temperature to gradually increase during the cooling season.
"HVAC Service" has found success throughout the years by evaluating overall system performance, ease of installation, reliability and long term energy consumption costs, and how these variables relate to an owner's needs.  Through innovative engineering, comprehensive design solutions, consistent work quality, and qualified maintenance; "HVAC Service" confidently delivers the best possible solutions for your business.
We service, repair and install most every type of hvac system whether it’s gas, electric or oil, on hvac systems (furnaces, heatpumps air conditioning untis and boilers) by Trane, Bryant, York, Goodman, Lennox, Rheem, Panasonic, Fujitsu and many more.  Our service area is mainly around the I-97 to Rout 32 corridor specifically Annapolis, Crownsville, Severna Park, Millersville, Gambrills, Crofton, Odenton, Severn, Fort Meade, Jessup, Elkridge through Columbia, MD.
Absorption refrigerator Air barrier Air conditioning Antifreeze Automobile air conditioning Autonomous building Building insulation materials Central heating Central solar heating Chilled beam Chilled water Constant air volume (CAV) Coolant Dedicated outdoor air system (DOAS) Deep water source cooling Demand-controlled ventilation (DCV) Displacement ventilation District cooling District heating Electric heating Energy recovery ventilation (ERV) Firestop Forced-air Forced-air gas Free cooling Heat recovery ventilation (HRV) Hybrid heat Hydronics HVAC Ice storage air conditioning Kitchen ventilation Mixed-mode ventilation Microgeneration Natural ventilation Passive cooling Passive house Radiant heating and cooling system Radiant cooling Radiant heating Radon mitigation Refrigeration Renewable heat Room air distribution Solar air heat Solar combisystem Solar cooling Solar heating Thermal insulation Underfloor air distribution Underfloor heating Vapor barrier Vapor-compression refrigeration (VCRS) Variable air volume (VAV) Variable refrigerant flow (VRF) Ventilation
I needed a replacement for my heater. I called Bill Howe and they promptly fitted me into their schedule. The person who arrived, Laurence C. thoroughly tested my furnace and pointed out the problem. I decided to replace it. They arrived on the day to install it. The two men, Jose Gomez and Javier Diaz promptly went to work. They were clean, efficient and respectful of my home. I would gladly recommend Bill Howe for your heating and plumbing needs. They were great!!​
Not obvious is the fact that they need maintenance routinely, just like any other machine. The filter, usually located behind the front grill, needs to be washed. The condenser coil at the back of the unit can accumulate a lot of debris, and might require a special chemical bath. All air conditioning systems, large or small, need good air flow across the evaporator coil and the condenser coil. Efficiency and performance drop rapidly as air flow decreases. Lose enough air flow and the unit will burn out. Rodents can nest inside when not in use, and can foul up the unit in many ways. Wasps and hornets, as well as the honey bee find finned coils to be comfortable nesting places. Nests and dead insects can ruin the air conditioner.
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.
The contactor (relay) and start/run capacitor(s) (see illustration below) fail most often and are inexpensive. So it’s a safe bet to buy and install those parts right away, especially if your air conditioning service unit is older than five years. The condenser fan motor can also fail, but it runs about $150 — hold off buying that unless you’re sure that’s the culprit.
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