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.

Air Conditioner Repair FAQs

Why is my AC blowing warm air?

This is usually caused by low refrigerant, a dirty air filter, a failing capacitor, or a thermostat that isn’t communicating with the system correctly. In some cases it’s simply a frozen coil that needs to thaw before the unit will cool again. We can usually pinpoint the exact cause during a single visit.

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.

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.

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.

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.

The unit needs enough clearance for airflow and service. Most systems need open space on all sides and above.

Install it on a level pad with good airflow, drainage, clearance, and service access. Avoid tight corners and blocked spaces.

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.

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.

Central AC is usually electric, while heat may be gas, electric, or heat pump-based. The equipment type determines the fuel source.

We service all major brands

Reviews from Happy Customers

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Mark Murray profile picture
Mark Murray
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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!
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Andrew profile picture
Andrew
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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!
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Marie Martinez profile picture
Marie Martinez
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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.
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Quinn Schwartz profile picture
Quinn Schwartz
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Charles is very helpful and attentive
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CCS 762 profile picture
CCS 762
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Charles has been my guy for 3 years. Always comes through. Thank you.