Business Details
50+ Years
experience
Reliable HVAC Solutions in Connecticut
Since 1967, W J Dornfeld has been a trusted provider of heating, ventilation, and air conditioning services across Connecticut. As a family-owned business founded by William J. Dornfeld and now led by his sons William R., James, and David Dornfeld, we combine decades of industry experience with a commitment to personalized service. Our licensed and insured technicians specialize in residential, commercial, and industrial HVAC solutions, including system design, installation, repair, and maintenance. With over 40 years of expertise, we prioritize quality craftsmanship, transparent communication, and timely execution to meet the unique needs of homeowners and businesses alike.Our fleet of fully equipped service vehicles ensures prompt response times, while our focus on client education fosters long-term trust. From custom home comfort systems to large-scale industrial chiller installations, we deliver reliable solutions that enhance efficiency and minimize disruptions. Backed by a legacy of excellence, we remain dedicated to upholding the standards established by our founders while adapting to evolving industry technologies.
Services
HVAC Installation
HVAC Repair
Maintenance Contracts
Commercial HVAC
Residential HVAC
Industrial Chiller Systems
Central Plants
Cooling Towers
Computer Room HVAC
HVAC Design Build
Details
- Year established: 1967
Highlights and features
- Family-owned since 1967 with 40+ years of HVAC expertise
- Licensed and insured technicians for residential and commercial systems
- Transparent diagnostics and cost explanations before repairs
- Custom HVAC solutions for new construction and retrofits
- Proven track record serving Connecticut businesses and homeowners
Services
HVAC Installation
Our HVAC installation service ensures proper setup of heating and cooling systems using industry-leading products. Technicians follow manufacturer specifications while considering property-specific requirements. We handle residential, commercial, and industrial projects, providing energy-efficient solutions that reduce long-term operating costs while maintaining comfort standards.
HVAC Repair
We offer diagnostic and repair services for all HVAC system types, including furnaces, air conditioners, and industrial chillers. Our process includes issue identification, cost explanation, and prompt resolution using quality replacement parts. Technicians arrive prepared with tools and equipment to minimize system downtime.
Maintenance Contracts
Scheduled maintenance plans help extend equipment lifespan while optimizing performance. Services include system inspections, component lubrication, filter replacements, and efficiency testing. Regular maintenance identifies potential issues before they become major problems, ensuring consistent operation during peak usage periods.
Commercial HVAC
Tailored solutions for commercial properties including office buildings, healthcare facilities, and manufacturing plants. Our team handles large-scale installations, central plant maintenance, and computer room climate control. We prioritize minimal disruption to business operations while meeting strict temperature and humidity requirements.
Residential HVAC
Custom HVAC solutions for single-family homes and multi-unit dwellings. Services include system design, installation of energy-efficient equipment, and seasonal maintenance. Our technicians respect property during service calls and provide homeowners with usage optimization tips to improve comfort and reduce energy bills.
People
William R. Dornfeld
Owner
Third-generation HVAC professional with 30+ years of industry experience. Oversees commercial project execution while maintaining family commitment to quality service.
James Dornfeld
Owner
Manages residential service operations with focus on customer satisfaction. Implements modern HVAC technologies while upholding traditional craftsmanship standards.
David Dornfeld
Owner
Specializes in industrial HVAC systems, bringing technical expertise to complex installations. Ensures compliance with safety regulations and operational efficiency requirements.
Questions
What HVAC services do you offer in Connecticut?
We provide installation, repair, and maintenance for residential, commercial, and industrial HVAC systems including chillers, central plants, and computer room climate control.
Are your technicians licensed and insured?
Yes, all our HVAC technicians are licensed professionals with full insurance coverage for residential and commercial projects.
Do you service all types of HVAC equipment?
We work on all makes and models of heating and cooling systems, including furnaces, air conditioners, boilers, and evaporative systems.
How quickly can you respond to HVAC emergencies?
Our standard service hours are 8:00 AM - 4:30 PM Monday-Friday. We prioritize urgent repair requests during operating hours.
Do you offer maintenance plans for HVAC systems?
Yes, we provide customized maintenance contracts that include regular inspections and preventive care to optimize system performance and longevity.
What areas do you serve?
We provide HVAC services throughout Connecticut, including New Haven, East Haven, Branford, and surrounding communities.
