About Casteel Heating, Cooling, Plumbing & Electrical
Casteel Heating, Cooling, Plumbing & Electrical is a top-rated HVAC company serving Atlanta, GA. With over 10142 reviews and a 4.8-star rating, they are one of the most trusted providers in the area.
Services offered
Specialties
Financing options
What customers say
I had an excellent experience with John from Casteel who serviced my home on January 24, 2026. From the moment he arrived, his energy was professional, calm, and reassuring. He is ...
Casteel, I had a great experience! Casey Salters/service technician exceeded my expectations. He confirmed his arrival time to my home, was courteous during the entire appointment...
Casteel did a great job replacing our two air conditioning systems. Adam helped us pick the systems with the capabilities we wanted. He made it very clear what we were buying and...
I'm so grateful for the team at Casteel. I've never had a bad experience with their office folks or technicians. Cody came by yesterday and inspected my HVAC systems in...
Recently had casteel come out to fix an AC issue not cooling. They are Way Overpriced and I feel like not very honest. The first thing the tech told me was that first off you need ...
Reviews
Frequently asked questions
How often should I replace my HVAC filter?
Standard filters should be replaced every 1-3 months. Homes with pets, allergies, or heavy dust may need monthly changes. High-efficiency filters can last up to 6 months.
How much does a new AC unit cost?
A new central AC unit typically costs $3,500-$7,500 installed. Factors include system size (tonnage), SEER rating, ductwork condition, and your climate zone.
What SEER rating should I look for?
Minimum SEER2 is now 14-15 depending on your region. For the best efficiency and long-term savings, look for 16+ SEER2. Higher ratings save more on cooling costs.
How long does an HVAC system last?
Most HVAC systems last 15-20 years with proper maintenance. Annual tune-ups, regular filter changes, and prompt repairs can extend system life significantly.
Why is my AC blowing warm air?
Common causes include low refrigerant, a dirty air filter, a frozen evaporator coil, a faulty compressor, or thermostat issues. Start by checking the filter and thermostat settings.
How much does duct cleaning cost?
Professional duct cleaning typically costs $300-$700 for an average home. Be wary of companies advertising very low prices, as they may upsell or do incomplete work.
Should I repair or replace my HVAC system?
Consider replacing if the system is over 15 years old, needs repairs costing more than 50% of replacement value, uses R-22 refrigerant, or has declining efficiency.
What is a mini-split system?
A mini-split is a ductless heating and cooling system. It has an outdoor compressor and one or more indoor units. Great for room additions, converted garages, or homes without ductwork.
How often should HVAC be serviced?
HVAC systems should be professionally serviced twice a year — once in spring for cooling and once in fall for heating. Regular maintenance prevents breakdowns and extends system life.
What size AC unit do I need?
AC sizing depends on square footage, insulation, climate, and other factors. A rough guide is 1 ton per 500-600 sq ft, but a professional load calculation gives the most accurate sizing.
Contact information
Where you'll find us
2218 Canton Rd, Marietta, GA 30066, USA, Atlanta, GA
Common questions
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Service area
Casteel Heating, Cooling, Plumbing & Electrical serves Atlanta, GA and surrounding areas.
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