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Business Details
50+ Years
experience
Trusted HVAC Installation & Repair in Buffalo
John Lock Air Conditioning & Heating Service Inc. has been a trusted name in Western New York for over 55 years. As a third-generation family-operated company, we specialize in designing, installing, and servicing heating, cooling, and indoor air quality systems for residential and commercial properties. Our team of technicians brings decades of combined experience, with lead service technicians averaging 30+ years and installation crews offering 15+ years of HVAC expertise. We prioritize customer satisfaction through honest consultations, transparent pricing, and meticulous workmanship. Our services include furnace installation, radiant heat systems, central air conditioning, ductless mini-splits, home generators, and snowmelt systems.

We offer 100% free no-obligation estimates and stand by our commitment to quality workmanship, prompt service, and competitive pricing. With a focus on energy-efficient solutions, we help clients reduce utility costs while maintaining comfort. Our reputation is built on generations of trust, reflected in testimonials from clients who have relied on our expertise for decades. We serve the Greater Buffalo Area, ensuring every client receives personalized attention and tailored solutions. From initial consultation to lifetime system maintenance, we deliver reliability and expertise that Western New York homeowners and businesses have come to expect since 1967.
Services
Furnace Installation Radiant Heat Systems Central Air Conditioning Ductless Mini-Splits Home Generators Snowmelt Systems Air Filtration Garage Heaters Thermostat Repair Boiler Maintenance
Details
  • Year established: 1967
Highlights and features
  • We have 55+ years of experience serving Western New York
  • Our technicians average 15+ years of HVAC expertise
  • We offer 100% free no-obligation estimates
  • Third-generation family-operated business with proven reliability
  • Prompt, courteous service with upfront pricing
What people say
Promptly responsive Long as John Lock Recommendations and service Quality workmanship Depend on their service
Services
Furnace Installation
We provide expert furnace installation for residential and commercial properties. Our experienced technicians assess heating needs and recommend high-efficiency models with AFUE ratings up to 98%. We ensure proper sizing and installation to maximize energy savings and system longevity while maintaining indoor comfort.
Radiant Heat Systems
Our radiant heating solutions deliver even, comfortable warmth through hydronic systems. We install and maintain boiler-based systems for homes and businesses, offering energy-efficient alternatives to traditional forced-air heating with customizable zone control options.
Central Air Conditioning
We install and service residential and commercial air conditioning units with SEER ratings up to 26. Our technicians perform load calculations to determine optimal system size and offer smart thermostat integration for improved efficiency and temperature control.
Ductless Mini-Splits
Our ductless system installations provide efficient cooling without requiring ductwork. We offer multi-zone solutions with wall-mounted, ceiling cassette, and floor-standing units that operate quietly while delivering targeted temperature control for specific areas.
Home Generators
We install whole-house standby generators that automatically activate during power outages. Our systems integrate with existing electrical infrastructure to maintain essential functions during emergencies, with automatic transfer switches and maintenance packages.
People
Mike Lock
Manager
Third-generation HVAC professional with over 30 years of industry experience managing installations and service operations for Western New York clients.
Questions
What HVAC services do you offer?
We provide furnace and AC installation, radiant heat systems, ductless mini-splits, home generators, and complete maintenance and repair services for residential and commercial properties.
How long have you served Western New York?
We've been serving the region since 1967, with three generations of HVAC expertise and technicians averaging 15+ years of experience.
Do you offer emergency HVAC service?
We provide prompt service during regular business hours with weekend appointments available, but we don't advertise 24/7 emergency response availability.
What areas do you service?
We serve the Greater Buffalo Area including West Seneca, Williamsville, Cheektowaga, and surrounding communities in Western New York.
Do you provide free estimates?
Yes, we offer 100% free no-obligation estimates for all installation projects with no pressure consultations.
Are your technicians certified?
Our technicians average 15+ years of HVAC experience with lead technicians having 30+ years, though specific certification details aren't provided in the text.
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