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HVAC FAQs: Answers From Alternative Aire's Durham Technicians
Straightforward answers to the questions we hear most from Durham homeowners and businesses, covering AC repair, AC installation, furnace repair, furnace installation, and commercial HVAC. If you don't see your question here, call us at (919) 404-9040 and we'll walk you through it.
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Air Conditioner Repair FAQs
Why is my AC blowing warm air?
What indoor temperature do HVAC professionals recommend for summer?
Most HVAC pros recommend a setting near 78 degrees for energy savings. Comfort needs, humidity, health needs, and home layout may change the best setting.
What is an inverter window air conditioner?
Yes. Open windows let hot, humid air inside and make the AC work harder, which can raise energy bills and reduce comfort.
Air Conditioner Installation FAQs
Why is my AC running but not cooling?
Common causes include low refrigerant, dirty coils, poor airflow, a bad capacitor, or compressor trouble. A technician should diagnose the system before parts are replaced.
Why won’t my AC reach the set temperature?
Your AC may be undersized, dirty, low on refrigerant, or affected by duct leaks or poor insulation. A full system check can find the cause.
Ductless Mini Splits FAQs
Who installs mini splits near me?
A licensed HVAC contractor that handles ductless systems should install mini splits. Choose one with experience in line sets, drainage, and system sizing.
Who works on mini splits near me?
Look for an HVAC company that services ductless brands and handles both refrigerant and electrical diagnostics. Not every contractor specializes in mini splits.
AC Installation FAQs
How far can an AC unit be from the house?
The distance depends on manufacturer limits, refrigerant line size, and installation design. Long distances may need special line set planning.
How much space is needed around an AC outdoor unit?
The unit needs enough clearance for airflow and service. Most systems need open space on all sides and above.
Where should an AC outdoor unit be installed?
Heating FAQs
Is HVAC gas or electric?
HVAC can be gas, electric, or both. Many homes use electric AC with either a gas furnace or an electric heat pump.
Is the central heat and air gas or electric?
Central AC is usually electric, while heat may be gas, electric, or heat pump-based. The equipment type determines the fuel source.
Heating FAQs
Is HVAC gas or electric?
HVAC can be gas, electric, or both. Many homes use electric AC with either a gas furnace or an electric heat pump.
Is the central heat and air gas or electric?
Central AC is usually electric, while heat may be gas, electric, or heat pump-based. The equipment type determines the fuel source.







Reviews from Happy Customers
EXCELLENT
Based on 1014 reviews
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Mark MurrayTrustindex verifies that the original source of the review is Google.
Our technician Solomon Lopez was great. He was very thorough in walking me through what needed to be done and why. The price was on the low end compared to other estimates that I received too!Posted on Google![]()
AndrewTrustindex verifies that the original source of the review is Google.
I called my go to company alternative Aire to help me with an issue with my HVAC and Phil came out and did a great job! Great customer service, he diagnosed the issue quickly and had it fixed within 15 minutes. He even took a look to make sure everything else was looking Okay. Cool air coming into the house now feels great. Thanks for your help Phil!Posted on Google![]()
Marie MartinezTrustindex verifies that the original source of the review is Google.
Phillip came in a timely manner and was so professional. He worked so quickly and was extremely thorough, checking every part of my system on such a hot day. I would highly recommend this company and especially the technician named Phillip.Posted on Google![]()
Quinn SchwartzTrustindex verifies that the original source of the review is Google.
Charles is very helpful and attentivePosted on Google![]()
CCS 762Trustindex verifies that the original source of the review is Google.
Charles has been my guy for 3 years. Always comes through. Thank you.