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28 Years
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Emergency
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Your Trusted HVAC Partner in Mount Pleasant, SC
Dunes Heating & Air Conditioning has served Mount Pleasant, Isle of Palms, Charleston, and surrounding areas since 1998, delivering exceptional residential and commercial HVAC repair, installation, and maintenance services. Our team of licensed, bonded, and insured technicians combines decades of experience with cutting-edge technology to diagnose and resolve HVAC issues efficiently. We prioritize transparency, offering upfront pricing and detailed quotes before any work begins, ensuring no hidden fees or surprises. With a focus on customer satisfaction, we provide same-day appointments, emergency services, and financing options to meet diverse client needs.

Our commitment to quality is reflected in our partnerships with industry leaders like Carrier and our rigorous staff training programs. We stand behind our work with industry-leading warranties and a 100% satisfaction guarantee, earning us a reputation as a trusted local HVAC provider. Our preventive maintenance programs help clients avoid costly breakdowns while maximizing system efficiency and longevity.
Services
AC Installation Heating Repair Air Duct Sealing Commercial HVAC Preventive Maintenance Thermostat Replacement Indoor Air Quality Ductless Mini-Split Systems Emergency HVAC Service HVAC Replacement
Details
  • Year established: 1998
Highlights and features
  • Trained and certified technicians with 20+ years of local HVAC experience
  • Licensed, bonded, and insured for client protection
  • Financing options available with approved credit
  • 24/7 emergency services for urgent HVAC needs
  • Honest pricing with no hidden fees or surprises
Associations and certifications
  • Carrier Dealer
  • Licensed (License #113390)
What people say
Best experience ever Affordable fix Professional and honest Timely and quality work Highly recommend
Services
AC Installation
Our AC installation service ensures energy-efficient cooling solutions tailored to your home size and climate needs. We offer Carrier-certified systems with SEER ratings up to 21, including 2-stage compressors and variable-speed technology for optimal comfort and energy savings. Our technicians complete installations with minimal disruption while ensuring proper system sizing and performance.
Heating Repair
Emergency heating repair services address furnace, heat pump, and boiler issues with rapid response times. Our diagnostic experts identify problems ranging from thermostat malfunctions to heat exchanger failures, using factory-certified replacement parts. We service all brands and provide detailed explanations of required repairs before work begins.
Preventive Maintenance
Our preventive maintenance plans include comprehensive system inspections, coil cleaning, and component testing to maintain peak efficiency. Regular maintenance reduces breakdown risks by up to 95% while extending equipment lifespan. We provide priority scheduling and discounted repair rates for plan members.
Air Duct Sealing
Professional duct sealing improves HVAC efficiency by eliminating air leaks in residential and commercial systems. Our technicians use mastic sealant and metal tape to repair leaks in accessible ductwork, reducing energy costs by up to 20%. We also offer duct insulation upgrades for enhanced performance.
Ductless Mini-Split Systems
Ductless mini-split installation provides targeted temperature control for additions, garages, or rooms without existing ductwork. Our systems feature up to 28.2 SEER efficiency with wireless controls and operate quietly at 19 dB levels. We handle both single-zone and multi-zone configurations with wall or floor-mounted units.
People
Nick
Owner/Technician
Nick leads HVAC operations with 20+ years of local experience, specializing in system diagnostics and energy-efficient solutions. He prioritizes honest recommendations and personalized service, earning multiple customer testimonials for integrity and technical expertise.
Questions
What HVAC services do you offer in Mount Pleasant?
We provide AC installation, heating repair, air duct sealing, preventive maintenance, ductless mini-split systems, and 24/7 emergency HVAC services for residential and commercial clients.
Are financing options available for HVAC replacements?
Yes, we offer financing plans with approved credit for new HVAC system installations to help manage upfront costs while improving energy efficiency.
Do you service all HVAC brands?
Our technicians service and repair all major HVAC brands, including Carrier, Trane, Lennox, and Rheem, using factory-certified replacement parts.
What emergency HVAC services are available?
We provide 24/7 emergency HVAC repair services for urgent cooling and heating failures, with same-day appointments available across the Charleston area.
How can I improve indoor air quality?
We offer air purifiers, HEPA filtration systems, and UV light installations to reduce allergens, bacteria, and pollutants in residential and commercial spaces.
What preventive maintenance plans include?
Our plans feature bi-annual system inspections, coil cleaning, and priority scheduling, helping maintain efficiency and extend equipment lifespan while reducing breakdown risks.
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