Business Details
50 Years
experience
Your Trusted Charleston HVAC Contractor
Mills Brothers Heating & Air has served Charleston, SC since 1976, delivering reliable HVAC solutions with a commitment to quality and customer satisfaction. Our NATE and EPA-certified technicians specialize in heating, cooling, and energy efficiency systems tailored to Low Country climate challenges. We prioritize green principles through energy-efficient products like tankless water heaters and spray foam insulation, reducing environmental impact while lowering utility costs. With BPI-certified energy audits and whole-home solutions, we help residential and commercial clients optimize comfort and sustainability.Our team provides same-day service calls, preventive maintenance programs, and free in-home consultations to ensure long-term system performance. Backed by partnerships with SCE&G and Berkeley Electric Cooperative, we offer energy-saving expertise that aligns with local utility standards. From new construction installations to commercial HVAC systems, our focus remains on delivering customized solutions with proven results.
Services
HVAC Installation
Tankless Water Heaters
Spray Foam Insulation
Energy Audits
Indoor Air Quality
Details
- Year established: 1976
Highlights and features
- We offer 45+ years of Charleston-specific HVAC expertise
- Our team includes NATE and EPA-certified technicians
- We provide energy-efficient solutions with 20-year tankless systems
- We guarantee same-day service completion for emergency repairs
- We conduct BPI-certified energy audits with blower door testing
Associations and certifications
- NATE Certified
- EPA Certified
- BPI Certified
What people say
Quality work
Competitive price
Experience and expertise
Green principles
Services
HVAC Installation
We install residential and commercial HVAC systems tailored to Charleston's climate. Our certified technicians use American Standard and HEIL equipment to ensure optimal temperature control and energy efficiency. System installations include proper sizing calculations and integration with existing infrastructure for maximum performance.
Tankless Water Heaters
Rinnai and Takagi tankless water heater installations provide continuous hot water while saving energy. Our experts help select appropriate units based on household demand, offering wall-mounted solutions that save space and deliver 20+ years of service life.
Spray Foam Insulation
We apply closed-cell and open-cell spray foam to improve building envelope performance. This reduces HVAC workload by sealing air leaks and maintaining consistent temperatures. Our high-pressure system creates custom insulation solutions for new construction and renovations.
Energy Audits
Using blower door tests and infrared cameras, we identify energy loss points in your home. Our BPI-certified audits evaluate insulation levels, air leakage, and system efficiency to create targeted improvement plans that maximize HVAC performance.
Indoor Air Quality
We install air filtration systems, humidifiers, and ventilation solutions to address Charleston's humidity challenges. Our encapsulated crawl space solutions and fresh air ventilators reduce allergens and improve overall indoor comfort for healthier living environments.
Questions
What HVAC services do you offer in Charleston?
We provide complete HVAC solutions including installation, repair, and maintenance for residential and commercial systems, plus energy audits and indoor air quality improvements.
Do you offer emergency HVAC repair services?
We prioritize service calls and typically complete repairs the same day they're requested during regular business hours.
What areas do you service?
We serve Charleston, North Charleston, and surrounding areas in Berkeley County, SC.
Do you provide energy efficiency consultations?
Yes, we offer free in-home consultations and energy audits using blower door tests and infrared cameras to identify efficiency improvements.
Why should I maintain my HVAC system annually?
Annual maintenance prevents breakdowns, extends equipment life, improves energy efficiency, and ensures optimal system performance during extreme weather conditions.
What are the benefits of spray foam insulation?
Spray foam creates an airtight seal, reduces energy costs, prevents mold growth, and improves structural integrity while providing superior thermal performance.
Videos
Reviews (1)
Barbara Brown
Nov 08, 2016
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Great Work! So Happy with all of the installs that they have done in my house. Like having the checkups too. Soooo good to be comfortable in my home!
