Reliable Furnace Repair and Heater Repair Services in Tucson

Our HVAC technician was in the Cresta Loma neighborhood, at N Oracle Rd and W River Rd. This was a heating season maintenance visit, with the usual inspections for gas leaks, CO emissions, cleanliness of burn in the furnace, and health of all A/C components related to heating.

In this Daikin unit, everything was great: no gas leak, clean burn, no carbon monoxide emissions. Except that the evaporator coil was corroded.

How can corrosion occur on an evap coil? The most common causes are (a) moisture, (b) airborne contaminants [dust, mold], and (c) harsh chemicals [like VOCs] that turn into acids [low pH].

This situation is not unusual. The evap coil is at the center of the exchanges inside the heater/furnace. It is exposed to humidity due to condensation from temperature differences. It may also be attacked by airborne micro-organisms (dust and mold spores).

Is it time to panic? It depends on the level of corrosion. In this unit, the process just started. It can be addressed using alkaline detergents to wash the coil and kill any microbial growth, raise the pH of the area, and leave a protective film on the metal.

Leave the task of heater repair or furnace repair to professionals. Your manufacturer’s warranty may be at risk.

Call D&H AC to do a thorough inspection of your air conditioning and furnace before the winter sets in.

Our HVAC technician did a maintenance visit in the neighborhood of Ironwood Ridge, on the West Side of i-10, below Grant Rd. The focus of the visit was an inspection of the heater/furnace of the air conditioner..

Upon arrival he was greeted by the tenant who told him they weren’t currently using the heater. They wanted it inspected beforehand.

Getting to the unit our tech found an old Payne air conditioner dating back from 1978, with no cooling function.

The diagnostic identified that the blower motor had spattered the frame with oil due to a failed bearing. The blower wheel was incredibly contaminated (dirt), which restricted the efficiency of the whole unit, and added strain on the motor. The unit was so strained, it vibrated badly.

After making sure no gas emission was detected, our technician engaged a heat cycle and found that the unit was operational. Unbelievable!

Operational but still in bad needs of furnace repair and upgrades.

However, due to its age, some obsolete parts, and the nature of repairs needed, this unit was not worth the investment required to find old stock parts for it. Even if we could have repaired it, it would have been too costly to continue operating it in the summer.

We recommended to replace it with a new unit, the most efficient and trouble-free option for that household.

1978 was a long time ago. This Payne air conditioner paid for itself multiple times over. But at some point, this remnant of a past long gone will cost so much money to maintain… that it’s not worth it.

When you need a heater repair or furnace repair, call D&H AC for the job. This is a safety requirement, and your manufacturer’s warranty can be voided.

Special Winter Season offer by D&H AC: Get your winter season heater tune-up for only $49. We perform a full safety inspection, including gas leak detection and carbon monoxide emission testing. We testing of all electrical components involved in the furnace heating sequence. We test the furnace burn quality. This is your tuneup.

Please note: This offer does not include heater repair or furnace repair services if they are found necessary.

This offer is valid until 12/31/2025 at 7 PM AZ time.

Don’t play with your safety: get your heater or furnace inspected and tuned up before winter temperatures kick in!

Call  D&H AC and quote this $49 per unit special offer.

Our HVAC technician visited a residence west of Silverbell rd, near the Belmont Trail, on the edge of the Saguaro National Park. Beautiful location which dominates the whole Tucson valley as you can see in this picture, taken from the roof.

The visit was for a heating season maintenance checkup, with any furnace repair or heater repair done as necessary.

All winter season maintenance starts with inspecting the air conditioning unit for gas leaks and carbon monoxide emissions. Our technician uses 2 different types of meters in various zones of the unit: in the furnace, in the evaporator coil, and then inside the house for CO emissions.

The inspection continues with an evaluation of the electrical components, and a visual inspection of both coils and heat exchanger.

This electrical inspection revealed that the current controller was failing, operating below manufacturer’s specifications. This creates a risk for the unit and needs to be addressed by replacing the failing controller.

Our technician completed the maintenance tasks by cleaning the condenser coil, making sure the unit would work at optimum efficiency for its age. This is an older Daikin gas package, and it needs the right amount of TLC to keep operating for years to come. In this case, there was no need for a furnace repair / heater repair.

Only 1 part had to be replaced, and it was under warranty. Our clients are covered by our Family Maintenance Plan, so they did not have any out-of-pocket expense.

Call D&H to ask about the benefits of our Family Maintenance Plan.

Our technician paid a technical visit to a home located in West Tucson, right around W Starr Pass Blvd and S Greasewood Rd, in the neighborhood known as “Westside Development”.

This was a pre-winter heating season checkup on a rooftop unit. The inspection involved checking all critical components: compressor, current controllers, both coils, and the electric heat kit. It included proceeding with any heater repair necessary.

The refrigerant ratings were looking ideal and the unit was operating within range. However, our technician found out that the current controller was out of manufacturer’s specifications and needed replacement. This was done immediately under our customer’s parts and labor warranty. No extra expense for the homeowner.

Is this a frequent issue? Yes. The current controller is a point of failure in any A/C unit as it is solicited often and submitted to the harsh heat of our Tucson summers.

Every other year, at the end of a brutal summer, you may have to change the current controller on your AC. This is not the same as a furnace repair or a heater repair. It’s simply electronics going bad.

Our Family Maintenance Plan gives you a nice discount on parts and labor if your A/C is no longer under warranty.

To conclude his visit, our technician washed the condensing coil to free it from dust and debris. This area of Tucson is subjected to strong winds, carrying dust and debris that find a refuge inside the A/C unit. It needs to be cleaned regularly to remove the dust and debris, or it won’t function optimally as the heat exchange is not happening properly.

Call D&H AC to inquire about our maintenance and for any heater repair or furnace repair issues.

Big surprise that day for our HVAC technician, who visited a home at N Swan Rd and E River Rd, in the Rio Robles neighborhood.

Arriving there, he discovered 2 air conditioners that were both over 30 years old.

It is exceedingly rare in Tucson to find A/C units that are 25 years old. Let alone 30!

The visit was for a heating tune-up. Units this old are prone to failure, and they need to be tested thoroughly, notably their electrical components: these age really badly in the heat and humidity.

Our HVAC technician went through the systems with a gas leak detector and found no gas leak. He engaged a heating cycle and checked for carbon monoxide (CO) emissions, notably around the aging heat exchangers. There was no carbon monoxide anywhere, which is a testament to the quality of these old A/C.

However, there was major wear-and-tear in the two air conditioners. When this is the case, do you proceed with a furnace repair? No. The cost of replacing the parts (some of which can’t even be found any longer on the market) makes it prohibitive to keep these units operating. They will nickel-and-dime you to death.

Our technician recommended the homeowners to consider replacing both units with a new one.

If your A/C is older than 25 years, it has long outrun its economic life. Replacing parts will be costly, and sometimes parts are impossible to find. These systems are not efficient anymore and they consume more electricity than a new AC.

Call D&H. We will study the situation, listen to your needs and concerns, and if appropriate, recommend a replacement. But we won’t advise you to proceed with a furnace repair.

Our HVAC technician was in Oro Valley, on E Brearly Dr, near E Pusch View Lane. This was a regular pre-winter maintenance call, with inspections for gas leaks and carbon monoxide emissions, and the customers’ authorization to proceed with any furnace repair or heater repair necessary.

At first nothing stood out as unusual. Our technician inspected the inner workings of the furnace, and used his meter to find gas leaks around the furnace. Nothing read abnormal. As the Daikin A/C unit seemed safe, he started a heating cycle to measure CO emissions. The furnace was burning with a clean flame. There was no reading of CO at the unit outside, and no CO emissions indoors either.

However, our technicians are trained to smell gas (not carbon dioxide, but the smell of LPG) and there was the recognizable smell of a gas leak in the house. He traced back the gas smell all the way to the garage and found the gas leak at the water heater: a fitting on the gas line had become slightly lose and gas was escaping from it. This is a highly dangerous situation as electricity is turned on and off, and as cars are parked and started in the garage. the risk of explosion is a clear and present danger.

Our technician tightened up the loose fitting, and that handled this problem. This situation had nothing to do with the A/C unit itself, but with another appliance (the water heater tank) using LPG to perform its function. A well-trained HVAC technician will take to heart to do his best to trace back any gas smell and remedy. Although in this case the furnace itself was not leaking, the overall system was leaking. A repair was 100% necessary.

Call D&H AC for your pre-winter inspection. Late fall, early winter is the right time to prepare your AC. Not after you fire it up because the temperatures have gone down. If you need a furnace reapir or a heater repair, it is not safe to fire up a heating unit that has not been thoroughly inspected.

Our HVAC technician was in Saddlebrooke, an area which is directly exposed to high winds due to its elevation and no protection by the Catalinas.

This geographic situation implies that A/C units will typically be dirtier than in Tucson, and a winter check-up may or may not involve a heater repair or furnace repair, but at the very least a very thorough coil clean-up.

Our technician inspected the gas fittings, the safety switches and the wiring involved in the heating circuit. He checked the fittings for gas leaks, and then the house for CO emissions.

After ensure that there was no danger in engaging a heating cycle, he observed furnace produced a good, clean burn.

Everything was normal, except the evaporator coil, that was so dirty it was preventing the unit from working efficiently.

Dirt on an evap coil acts as an insulator: it blocks airflow and reduces the normal rate of heat transfer. This prevents the A/C from cooling normally, so the unit has to work extra hard — higher electricity bills, potential system freeze, and additional wear-and-tear.

Once our technician cleaned up the evap coil, the unit was working to factory specifications, and it is safe for winter operation. No furnace repair or heater repair necessary.

If you see your power bills go up without explanation, don’t wait for additional costs or an AC system failure.

Call D&H quickly for an air conditioning check-up. Inquire about the benefits of our Family Maintenance Plan. For a few dollars a month, you get 2 annual check-ups, and discounted rates on parts and labor.

WInter is coming and this is when you fire up your furnace to heat up your home. Before you do that, you need to be sure there are no gas leaks around your system, no carbon monoxide emissions in your home, and no heater repair or furnace repair necessary.

Our HVAC technician visited a home in East Tucson, to perform a heating season maintenance check-up. The residence was located right below Speedway Blvd and N Harrison Rd.

The air conditioner to be inspected was a gas package, a unit that uses gas to feed the furnace. Our technician inspected the unit for any gas leaks. No gas leak detected, so he performed a visual inspection of all safety switches involved in the heating sequence, as well as of the heat exchanger. Once our technician was assured there were no unusual signs, the next step was to engage a heating cycle.

During this step, our technician uses a CO meter, a tool that will detect minute traces of carbon monoxide. The meter did not read any traceable amount of CO. This furnace is safe and can be operated during the coming winter.

Our technician concluded his visit by washing the condenser coil to remove debris, and by making a few recommendations to the family to keep their old AC operating correctly.

D&H Air Conditioning offers a low-cost Family Maintenance Plan: 2 annual checklups, discounts on labor and parts. Call D&H.