Air Conditioning

Air conditioning service.

Petra Heating & Air Conditioning is your #1 HVAC contractor in Clackamas, OR, and the surrounding communities. We are the leading company for all of your air conditioning needs. If you need repairs, maintenance, or a brand new system installed, the technicians at Petra Heating & Air Conditioning are the qualified and professional crew for the job.

We provide the highest quality service for your air conditioner. We also aim to educate and inform our customers. Informed decisions are good decisions. We want you to feel confident we are qualified to perform the service for which you are hiring us.

How Much Money Can a New Air Conditioner Save You?

Our SEER2 (Seasonal Energy Efficiency Ratio 2) energy savings calculator can help determine how much you could save on your utility bills. Simply enter your current unit’s SEER value and compare it to a newer, more efficient SEER2 unit. You can even customize it to better match your home’s system for a more accurate calculation.


SEER2 Energy Savings Calculator

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This calculator does not guarantee actual costs or savings and is only to be used for educational purposes.

Customize to Your Home

Adjust these settings for a more accurate calculation:




Rate (¢/kWH)


Average Annual Cooling Hours***

Historical Comparison

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** Data from U.S. Energy Information Administration
*** Data from 2002 EPA study

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Air Conditioning Basics

The four main components to your air conditioner are:

Condenser: The condenser is the outside metal unit and where the gas from the compressor is condensed into a liquid. The gas entering the condenser is very hot. The temperature is then lowered, so the gas can convert back to a liquid.

Compressor: The compressor is inside the condenser. It circulates the pressurized refrigerant, to concentrate the heat, and changes the low pressure gas to high pressure.

Evaporator: The evaporator is the part of the system inside the home. In simple language, it absorbs the heat from your home.

Expansion Valve: The expansion valve controls the amount of refrigerant in your system.

All of these pieces are connected by a copper tube that handles refrigerant, creating a closed loop. Heat is collected in the evaporator, sent outside to the condenser. The heat is removed, and the cool air is recirculated back into your home.

AC Facts

An Air Conditioner Doesn’t Create Cool Air.
What happens in the AC process is actually the removal of heat from the air. Your AC uses a chemical called refrigerant to remove heat and transfer it outside. The warm air runs through the lines and coils in your unit and goes from liquid to gas and back again. During this process, the refrigerant removes the heat and transfers it elsewhere so that when the air comes out the other side, it is cool.

Your AC Will Remove Humidity.
Lower humidity helps the overall comfort level in your home by making you feel cooler, even if the temperature is the same.

Your Air Filter Needs To Be Checked And Replaced Every Three To Six Months.
(depending on the manufacturer’s recommendations)
A dirty air filter restricts your air flow, which reduces efficiency, costing you money, and over time can put stress on your unit and could cause a costly repair.

Maintenance, Maintenance, Maintenance.
Your air conditioner needs regular checkups to keep it running in tip-top shape. Having regular annual preventative maintenance will bring your system longer life and fewer breakdowns over all.

The Seasonal Energy Efficiency Ratio (SEER) measures air conditioning and heat pump cooling efficiency, which is calculated by the cooling output for a typical cooling season divided by the total electric energy input during the same time frame. A higher SEER rating means greater energy efficiency.

At Petra Heating & Air Conditioning, we provide all the services you need to keep your AC running in top-notch shape. Call us at 503-253-3263 for repairs, maintenance, or new-system installation.

Air Conditioner Replacement in Happy Valley, OR 97086

“I very seldom leave reviews, but I had to make sure to publicly recognize Justin, my AC installer. He did an exemplary job and really went above and beyond. The replacement of my system was complicated (and highly unusual according to all the experts who looked at it), but Justin did not cut any corners installing the replacement unit. At every level, the folks I dealt with at Petra were professional and courteous! I would not hesitate for a moment in recommending them.”
- Lisa M.

Air Conditioner Maintenance in Portland, OR 97239

“We’ve liked everyone we’ve encountered at Petra. Jason was no exception. He’s a good worker with an friendly, engaging personality. He did a great job and also gave me an excellent tutorial on keeping our A/C in good shape, which I much appreciated!”

- Douglas M.

Air Conditioner Repair in Portland, OR 97212

“Rick was friendly and professional. He serviced our A/C unit quickly and with a smile. Great person! Highly recommend Rick and the Petra team.”

- Alivya L.

Air Conditioner Repair in Portland, OR 97212

“Rick was friendly and professional. He serviced our A/C unit quickly and with a smile. Great person! Highly recommend Rick and the Petra team.”

- Alivya L.

Air Conditioner Repair in Portland, OR 97209

“Rick did a great job and was able to repair the A/C when I thought it needed a replacement. Did a great job making conversation and explaining the work being performed. Great service!”

- Jason H.

Air Conditioner Maintenance in Milwaukie, OR 97267

“Mr. Rehmke was very helpful and informative about our air conditioner. We sure appreciate such good service and courtesy too. We will certainly return to this company for our future services and purchases. Thanks Rick and Petra.”

- Dave S.

Air Conditioner Maintenance in Hillsboro, OR 97124

“I'm very happy with the service and support Petra delivers. The customer service team is super prompt and helpful, never had an issue with setting up an appointment and got prompt updates.
Jason the service tech was polite and professional, and even got some treats for my dog.”

- Gautham S.

Air Conditioner Maintenance in Milwaukee, OR 97222

“Jason always does a great job. He is timely, answers my questions and is just a pleasant fellow.”

- Frank W.

Air Conditioner Maintenance in Portland, OR 97239

“Very helpful. It was a difficult location for service and he just did it, and was very positive and encouraging.”

- James R.

Air Conditioner Repair in Portland, OR 97220

“Rick was informative, thorough, professional and personable, as has been all been all representatives from Petra. It is a comfort knowing we have your services available to us.”

- William W.

Need Air Conditioner Service?

Contact the experts at Petra Heating & Air Conditioning.

Call us at 503-253-3263!