Denver HVAC Repair

James Heating & A/C, Inc offers furnace service appointments that help keep your furnace in tip-top shape and operating efficiently for you all winter long. Whether that’s finding small issues before they become big problems, identifying potential safety hazards or making sure you’re maintaining your manufacturer’s warranty, our experts have you covered. Our trained technicians complete furnace service with care, inspecting a number of components in and around your furnace. In fact, our multi-point inspection can help make sure your system runs smoothly throughout the winter.
A dehumidifier is an air-conditioner-like device that controls the humidity of a room or building. It is often employed in basements which have a higher relative humidity because of their lower temperature (and propensity for damp floors and walls). In food retailing establishments, large open chiller cabinets are highly effective at dehumidifying the internal air. Conversely, a humidifier increases the humidity of a building.
Our skilled technicians arrive prepared to handle the scope of even complex malfunctions, with all makes and models of heating and cooling equipment, most often resolving the problem on the spot.  For all your HVAC service, repairs, and installations in Livermore, CA, Pleasanton, CA & Dublin, CA, call the team from Miller’s Air Conditioning & Heating!
The use of CFC as a refrigerant was once common, including the refrigerants R-11 and R-12 (sold under the brand name Freon-12). Freon refrigerants were commonly used during the 20th century in air conditioners due to their superior stability and safety properties. When they are released accidentally or deliberately, these chlorine-bearing refrigerants eventually reach the upper atmosphere.[60] Once the refrigerant reaches the stratosphere, UV radiation from the Sun homolytically cleaves the chlorine-carbon bond, yielding a chlorine radical. These chlorine radicals catalyze the breakdown of ozone into diatomic oxygen, depleting the ozone layer that shields the Earth's surface from strong UV radiation. Each chlorine radical remains active as a catalyst until it binds with another radical, forming a stable molecule and quenching the chain reaction.
You’re constantly repairing your HVAC: If your heating and cooling system has needed repairs more than once or twice in the past few years, it may be time to take the leap with a replacement system. The money you spend repairing older equipment can often be better used towards the purchase of newer, energy-efficient HVAC systems. Here’s a simple guide: If your labor and parts cost upwards of $1,000, look toward replacement. 
I called HVAC on a Saturday morning to come and look at the A/C. The woman answering the phone told… I called HVAC on a Saturday morning to come and look at the A/C. The woman answering the phone told me that she would call the technician and call me back with a service window of when he would be there.  Hours later, she still hadn't called back. When I called back to follow up, the new lady answering the phone told me the original woman had given me miss information. They were a call center and could only text the technician (who of course was supposed to be hadn't called me back)! She texted him again and when he finally called back, he told me I'd have to make an appointment for Tuesday! What's the point of after-hours emergency A/C service if I have to wait until three days later and have them come during normal business hours?! Unbelievably poor service! Read more

As one of the most trusted commercial HVAC service companies in the Midwest, not only will you receive prompt service, you won’t have to worry about our teams’ knowledge and corrective service capabilities. In the last 18 months, we’ve performed more than 3,790 mechanical preventive maintenance inspections. Whether you're in need of basic air conditioner maintenance or full commercial heating and air conditioning repair, we have yet to find a deficiency we can't fix.


In 1992, a non-governmental organization, Greenpeace, was spurred by corporate executive policies and requested that a European lab find substitute refrigerants. This led to two alternatives, one a blend of propane (R290) and isobutane (R600a), and one of pure isobutane.[18][22] Industry resisted change in Europe until 1993, and in the U.S. until 2011, despite some supportive steps in 2004 and 2008 (see Refrigerant Development above).[27][67]
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.

SEER is related to the coefficient of performance (COP) commonly used in thermodynamics and also to the Energy Efficiency Ratio (EER). The EER is the efficiency rating for the equipment at a particular pair of external and internal temperatures, while SEER is calculated over a whole range of external temperatures (i.e., the temperature distribution for the geographical location of the SEER test). SEER is unusual in that it is composed of an Imperial unit divided by an SI unit. The COP is a ratio with the same metric units of energy (joules) in both the numerator and denominator. They cancel out, leaving a dimensionless quantity. Formulas for the approximate conversion between SEER and EER or COP are available.[34]


This company was highly recommended to us by our realtor. Corey came out to do some work for us and he was really professional. He was on time, and explained everything he was doing and gave a quote (it actually ended up being cheaper!) before he started. He also looked at other stuff for us, and we got the feeling he was being honest and not pushy with his recommendations. We've already booked another appointment to fix some other things, and we requested Corey to do it.
Ventilation is the process of changing or replacing air in any space to control temperature or remove any combination of moisture, odors, smoke, heat, dust, airborne bacteria, or carbon dioxide, and to replenish oxygen. Ventilation includes both the exchange of air with the outside as well as circulation of air within the building. It is one of the most important factors for maintaining acceptable indoor air quality in buildings. Methods for ventilating a building may be divided into mechanical/forced and natural types.[16]

Protect your investment with HVAC services designed to create comfortable, energy efficient environments. National HVAC Service mechanical services safeguard against downtime and premature equipment failure while keeping facilities safe and comfortable. Our experienced HVAC technicians play a vital role in the daily operations of facility productivity and efficiency.
Regardless of how far along you are in your air conditioning project, you should start looking for a contractor now. The demand for Portland air conditioning has begun to outstrip the supply of contractors, and homeowners are telling us they've had to fight/wait to schedule an installation date. This may also determine the availability of your preferred contractor, as the best contractors' schedules tend to fill more quickly than the rest. Once you've submitted your online request, you can trust that our contractors are the most reliable professionals in the business. Each and every one our contractors has been put through a rigorous ten-step screening process. Our online customer ratings and reviews section will allow you to see what other homeowners have said, not just about individual contractors, but Portland air conditioning installation in general.
Its difficult to describe how good of an experience I had with Cobb heat and AC. Ill put it like this, I have gone two 3 other AC repair companies, they send out their most novice field engineer, they give me a 6000 dollar quote to replace my AC for a property I just purchased, and then they leave. Mr Cobb came out himself, figured out the issue cleaned the condenser coils and told me my unit was only a YEAR OLD!!! He did not try to up-sale me or BS me with a quote to replace the boiler which I have had happen as well as the ac unit. Other AC companies suck, I'm sticking with Cobb. hope that helps

You should have your air conditioning maintenance done at least once a year, in the spring. Doing it in the spring will allow your technician to repair any damage the unit might have acquired during the winter, and make it ready just in time for the arrival of warmer temperatures. However, it’s best to do maintenance twice a year: in the spring and fall. Sticking to this bi-annual schedule will keep your unit running optimally.
They did come out Tuesday and completed the job.  We called the office to ask for a breakdown of the cost and they said the tech would call us back, but that never happened.  Eventually Alberto called and explained the breakdown.  One reason it was more was they used an OEM circuit board, rather than an aftermarket part.  I agree with this but it would have been better if this had been explained from the beginning.  All in all, it still seems like their price is a bit on the high side, but they did a good job and used OEM parts so I'm giving them four stars. Read more
Are you considering whether you need to replace your home’s central heating, ventilation, and air conditioning unit—commonly known as your HVAC system? As a general rule, if your existing HVAC system is more than 15 years old, it’s only a matter of time before it starts to cost more to maintain than it would to replace it with a new system. In addition to higher energy bills brought on by a system that can no longer function at peak efficiency, repair costs will also start to add up as parts are replaced and the ventilation system undergoes major overhauls.
In 2006, a new HVAC rule went into affect for residential air conditioners, requiring all to have a Seasonal Energy Efficiency Ratio (SEER) of 13 or higher. As you might expect, the more efficient the unit is (or newer), the lower your average AC repair cost will be. Keep in mind, if for some reason your high-efficient repair bill is high, you’re still saving on energy costs every month through your electric and gas bills. 
I called HVAC on a Saturday morning to come and look at the A/C. The woman answering the phone told… I called HVAC on a Saturday morning to come and look at the A/C. The woman answering the phone told me that she would call the technician and call me back with a service window of when he would be there.  Hours later, she still hadn't called back. When I called back to follow up, the new lady answering the phone told me the original woman had given me miss information. They were a call center and could only text the technician (who of course was supposed to be hadn't called me back)! She texted him again and when he finally called back, he told me I'd have to make an appointment for Tuesday! What's the point of after-hours emergency A/C service if I have to wait until three days later and have them come during normal business hours?! Unbelievably poor service! Read more

American design standards are legislated in the Uniform Mechanical Code or International Mechanical Code. In certain states, counties, or cities, either of these codes may be adopted and amended via various legislative processes. These codes are updated and published by the International Association of Plumbing and Mechanical Officials (IAPMO) or the International Code Council (ICC) respectively, on a 3-year code development cycle. Typically, local building permit departments are charged with enforcement of these standards on private and certain public properties.
When you run into issues with the HVAC system at your home or office, you need a team of professionals by your side right away. That's exactly what A & K Service Heating & Cooling Inc. is here for. We'll take on any job in the Alpharetta and Woodstock, Georgia areas, from filter changeouts in single-family homes to complete HVAC overhauls in large commercial properties.
Waited a week for technician who showed up for less than 15 minutes and told me that my air filters were dirty and I needed to experiment with thermostats to be comfortable. Thermostat shows temp at 75 when set on 71. Did what he instructed and still had problems when I realized unit was short cycling. When I called technician he told me I would have to place a new request for service. He gave me the office number and hung up on me. By the time I called office he had called in and said he refused to come back out. The operator would not give me business owners name and could not tell me why technician refused to return although they did say they would refund the fee for service call. Telephone rep yelled at me.
Reinstall the access panel and disconnect block. Turn on the circuit breaker and furnace switch. Then set the thermostat to a lower temperature and wait for the AC to start (see “Be Patient at Startup,” below). The compressor should run and the condenser fan should spin. If the compressor starts but the fan doesn’t, the fan motor is most likely shot. Shut off the power and remove the screws around the condenser cover. Lift the cover and remove the fan blade and motor (photo 7). Reinstall the blade and secure the cover. Then repower the unit and see if the fan starts. If it doesn’t, you’ve given it your best shot—it’s time to call a pro.
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