Business Details
50+ Years
experience
Emergency
services
Your Trusted HVAC Partner in Chicago
Deljo Heating has been a trusted name in HVAC services since 1922, providing Chicago families with reliable heating, cooling, and plumbing solutions. Our century-long legacy is built on a commitment to excellence, with 24/7 emergency support and flexible financing options tailored to homeowners' needs. Our team of NATE-certified technicians delivers comprehensive services, from routine maintenance to emergency repairs, ensuring optimal system performance. With over 3,000 5-star reviews, we prioritize customer satisfaction through transparent pricing and honest recommendations.Our Mitsubishi Diamond Dealer status reflects our technical expertise and dedication to superior service. We emphasize preventive care through maintenance agreements that extend equipment lifespan while offering priority scheduling for our clients. Our technicians undergo rigorous training, combining generational knowledge with modern techniques to address complex HVAC challenges. This unwavering focus on quality has established us as Chicagos premier HVAC contractor.
Services
HVAC Maintenance
Furnace Repair
Boiler Installation
AC Tune Up
Drain Cleaning
Emergency HVAC Service
Ductless Air Conditioning
Plumbing Fixtures
Indoor Air Quality
Maintenance Plans
Details
- Year established: 1922
Highlights and features
- 100+ years in business with 3,000+ 5-star reviews
- 24/7 emergency HVAC and plumbing services
- 3,800+ active maintenance agreements
- Flexible financing options available
- Mitsubishi Diamond Dealer certification
Associations and certifications
- Mitsubishi Diamond Dealer
- NATE-certified
What people say
Prompt, professional service
Knowledgeable technicians
24/7 emergency support
Transparent pricing
Efficient repairs
Services
HVAC Maintenance
Regular HVAC maintenance prevents breakdowns and extends equipment lifespan. Our technicians perform comprehensive inspections, cleaning, and adjustments to ensure optimal efficiency. Clients receive discounted parts and priority scheduling with our maintenance agreements.
Emergency Furnace Repair
24/7 furnace repair services restore heat during Chicago winters. We diagnose issues like frozen condensate lines and system overloads, completing most repairs in one visit with upfront pricing.
AC Tune Up
Preventive AC maintenance improves efficiency and prevents summer breakdowns. Our technicians clean coils, check refrigerant levels, and optimize system performance for Chicagos humid climate.
Drain Cleaning
Professional drain cleaning prevents backups using high-pressure jetting and video inspections. We address root intrusion and buildup in kitchen, bathroom, and sewer lines across Chicago neighborhoods.
Boiler Installation
Expert boiler replacements ensure efficient heating for Chicago homes. We install energy-efficient models and provide training on system operation and maintenance best practices.
People
Bob Clement
Owner
Co-owner with 40+ years in HVAC, expanding Deljo from a 5-man operation to a family-run enterprise. Focuses on technical innovation and service quality.
Bill Clement
Owner
Co-owner instrumental in Deljos growth since the 1980s. Oversees technician training and maintains the companys commitment to personalized service.
Questions
Do you offer 24/7 emergency HVAC service?
Yes, we provide 24/7 emergency HVAC repairs in Chicago with technicians available within 1-2 hours.
Can I finance HVAC replacements?
Yes, we offer flexible financing options for new HVAC system installations through trusted partners.
How often should HVAC systems be serviced?
Annual maintenance is recommended for both heating and cooling systems to ensure optimal performance.
Do you service all HVAC brands?
Our technicians are trained to service all major HVAC brands and models across Chicagoland.
What areas do you service?
We serve Chicago neighborhoods and suburbs including Evanston, Naperville, and Oak Park.
How can I improve indoor air quality?
We offer air purifiers, humidifiers, and ventilation solutions to enhance indoor air quality in Chicago homes.
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