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Trusted HVAC Services in Pittsburgh
Mullen Heating and Air Conditioning has served Pittsburgh residents and businesses for decades, specializing in HVAC system installation, repair, and maintenance. As a family-run business, we prioritize preserving existing heating and cooling units rather than pushing unnecessary replacements, ensuring cost-effective solutions for our clients. Our EPA and HVAC-certified technicians deliver 24/7 emergency services, guaranteeing prompt, reliable support for residential and commercial properties. We focus on optimizing system efficiency through proper vent sizing, thermostat calibration, and preventative maintenance, helping clients reduce energy bills by up to 35%. With Trade License #HV05135 and HIC #PA084200, we combine technical expertise with personalized service to ensure year-round comfort and system longevity.

Our commitment to transparency, fair pricing, and customer satisfaction has established us as a trusted partner in the Pittsburgh area. We offer financing options through quality lenders and maintain rigorous standards for equipment quality and service delivery. From heat pump installations to UVC air purifiers, our solutions address diverse HVAC needs while prioritizing energy efficiency and indoor air quality. Our teams decades of experience and dedication to continuous improvement ensure clients receive cutting-edge, dependable services. We stand behind our work with satisfaction guarantees and detailed written estimates for every project.
Services
Residential HVAC Commercial HVAC HVAC Maintenance Heat Pump Installation Air Conditioning Repair
Highlights and features
  • We are a family-run business with decades of local HVAC expertise.
  • We prioritize preserving existing systems instead of recommending unnecessary replacements.
  • Our EPA-certified technicians provide 24/7 emergency service availability.
  • We guarantee transparent pricing with no hidden fees.
  • Our preventative maintenance programs extend system lifespan and reduce energy costs.
Associations and certifications
  • EPA
  • HVAC Certified
What people say
Trusted service Knowledgeable technicians Fair pricing 24/7 availability Energy savings
Services
Residential HVAC
Mullen Heating and Air Conditioning delivers comprehensive residential HVAC solutions, including system installation, repair, and maintenance. Our EPA-certified technicians optimize heating and cooling efficiency through proper vent sizing and thermostat calibration. We specialize in extending equipment lifespan while reducing homeowners' energy bills by up to 35% through preventative maintenance programs.
Commercial HVAC
Our commercial HVAC services ensure optimal temperature control for Pittsburgh businesses, improving workplace efficiency and reducing utility costs. We provide system diagnostics, ductwork maintenance, and energy-efficient upgrades tailored to commercial spaces. Our 24/7 emergency repair team minimizes downtime for critical business operations while maintaining air quality through professional ventilation maintenance.
HVAC Maintenance
Preventative maintenance programs include annual system inspections, refrigerant pressure checks, and ductwork leak detection. Our technicians perform comprehensive diagnostics to identify potential issues before they become costly repairs. Regular maintenance extends equipment lifespan and maintains manufacturer warranties while ensuring consistent energy efficiency.
Heat Pump Installation
We install and service high-efficiency heat pump systems that provide both heating and cooling while reducing energy consumption. Our technicians ensure proper system sizing and integration with existing HVAC infrastructure. Heat pumps offer up to 35% energy savings compared to traditional systems while maintaining year-round comfort through advanced refrigerant technology.
Air Conditioning Repair
Emergency and scheduled AC repair services address system failures, refrigerant leaks, and component malfunctions. Our certified technicians diagnose issues using professional diagnostic tools and repair or replace parts with manufacturer-approved equivalents. We prioritize restoring cooling functionality while identifying underlying efficiency concerns to prevent future breakdowns.
People
John Mullen
Owner
John Mullen has provided HVAC expertise in Pittsburgh for decades, combining technical proficiency with customer-focused service. His hands-on approach ensures every project meets strict quality standards while maintaining cost-effectiveness for clients.
Questions
What HVAC services do you offer for residential properties?
We provide air conditioning installation, furnace repair, heat pump services, thermostat upgrades, and preventative maintenance for homes.
Do you offer 24/7 emergency HVAC repair?
Yes, our certified technicians are available 24 hours a day, 7 days a week for urgent heating and cooling issues.
Can you help reduce my energy bills through HVAC optimization?
Our system optimization services, including vent sizing and preventative maintenance, can reduce energy costs by up to 35%.
Are financing options available for HVAC installations?
Yes, we partner with quality lenders to offer financing solutions for residential and commercial HVAC projects.
What preventative maintenance programs do you offer?
Our annual maintenance packages include system diagnostics, ductwork inspections, refrigerant checks, and thermostat calibration to ensure peak efficiency.
Are your technicians EPA-certified?
All our HVAC technicians hold EPA and industry certifications for residential and commercial system installations and repairs.