Deljo Heating & Cooling offers 24/7 emergency HVAC and plumbing services in Lincolnwood, IL. Our licensed, NATE-certified technicians deliver honest, high-quality solutions for your heating, cooling, and plumbing needs.
Deljo has proudly served homeowners and businesses across the greater Chicago area for more than 100 years. From same-day AC repair to emergency plumbing services, we’re your one-stop shop for home comfort in Lincolnwood, IL.
Air Conditioning Service in Lincolnwood, IL
Lincolnwood summers can be dangerously hot. This means your air conditioning system is more than a luxury. It’s necessary for your health and safety. Whether your unit needs repair, maintenance, or replacement, Deljo Heating & Cooling is here to help.
AC Repair in Lincolnwood, IL
If your AC unit is blowing warm air, making strange noises, or won’t turn on at all, our expert technicians can diagnose and fix the issue fast. We provide:
- Same-day AC repair for all major brands
- Emergency AC service 24/7 for urgent cooling failures
AC Installation in Lincolnwood, IL
If your cooling system is outdated or beyond repair, we offer energy-efficient AC replacements designed to keep your home comfortable while saving on energy costs. Our technicians will help you select and install the ideal high-efficiency Carrier system for your Lincolnwood home.
AC Maintenance in Lincolnwood, IL
Prevent breakdowns before they happen with routine maintenance. Our seasonal AC tune-ups keep your system running efficiently and help extend its lifespan.
Heating Services in Lincolnwood, IL
When temperatures drop below freezing, a failed heating system can’t wait until morning. We’ve helped families across Lincolnwood stay warm through some of Chicago’s coldest winters. Whether your home uses a traditional furnace, boiler, or heat pump, Deljo Heating & Cooling offers fast, professional solutions tailored to your system.
Furnace Repair in Lincolnwood, IL
If your furnace isn’t heating properly or has stopped working entirely, our team can diagnose and repair your furnace quickly. We offer:
- 24/7 emergency furnace repair
- Same-day diagnostics and service
Furnace Installation in Lincolnwood, IL
When repairs aren’t enough, we offer energy-efficient furnace replacements designed to keep your home warm and your energy bills low. We install top-rated Carrier heating systems to match your home’s needs.
Furnace Maintenance in Lincolnwood, IL
Prevent winter breakdowns with seasonal maintenance. Our heating tune-ups improve system performance, extend equipment lifespan, and keep your family safe.
Lincolnwood Plumbing Services
Plumbing issues can appear without warning, especially in Lincolnwood’s varied housing stock. That’s why we offer round-the-clock emergency plumbing service—so you’re never left to deal with water damage alone.
Our licensed Lincolnwood plumbers handle everything from clogged drains to frozen pipes with speed and precision—whether it’s a routine fix or an emergency.
Our plumbing services include:
- Drain cleaning
- Pipe repair
- Water heater repair and installation (tank and tankless)
- Sump pump maintenance and installation
- Frozen pipe repair and winterization
- Emergency plumbing service, 24/7
From newer homes to historic properties with aging infrastructure, we’re equipped to handle plumbing systems of every kind.
Why Choose Deljo for HVAC & Plumbing in Lincolnwood?
Deljo Heating & Cooling has built a reputation for exceptional service, honest work, and unmatched expertise. Lincolnwood homeowners count on us for:
- Over 100 years of trusted service in the Chicago area
- Licensed, certified, and background-checked technicians
- Same-day service and 24/7 emergency availability
- Transparent pricing with no hidden fees
- Flexible financing options
Rather than simply fixing problems, we provide long-term solutions that keep your home safe, efficient, and comfortable for years to come.
Why Emergency Service Matters
When your comfort or safety is at risk, every minute matters. That’s why Deljo offers 24/7 emergency services backed by a century of trusted experience. Whether it’s a furnace failure during a deep freeze or a burst pipe at night, our team will quickly restore safety and comfort to your home.
Schedule HVAC or Plumbing Service in Lincolnwood, IL
Ready to schedule service? Call Deljo Heating & Cooling at (773) 888-4229 or book your appointment online. Whether you need a reliable plumber or HVAC repair in Lincolnwood, IL, we’re here to help.
Recent Jobs and Reviews in Lincolnwood, IL
Lincolnwood, IL at a glance
Deljo Heating, Cooling & Plumbing has completed 20 jobs in Lincolnwood, IL between May 2026 and September 2026.
The most recent job was on September 8, 2026.
Job Locations and Reviews
Responded to service call for iced-up evaporator coil on WeatherMaker HVAC system. Upon inspection, confirmed ice buildup on coil and performed defrost procedure. Diagnosed root cause of icing condition and restored system to proper operation. Customer expressed interest in preventative maintenance program enrollment. Documented equipment condition with photographs showing both legacy cast iron boiler and current WeatherMaker furnace installation in basement mechanical room.
Responded to emergency service call where fire department had disconnected backup battery system due to elevated carbon monoxide levels detected in the area. Conducted thorough inspection of SUN 2500 backup power system and associated Worldwide brand batteries to assess system integrity and identify potential sources of CO concern. Verified all electrical connections, battery terminals, and ventilation conditions were properly maintained, and documented current state of equipment for safety clearance and system restoration.
Responded to no heat call and discovered multiple gas line leaks in utility room near water heater and throughout mechanical space. Coordinated with Nicor Gas who confirmed active gas leaks on black iron piping system. For safety, gas service was immediately shut off at the meter to prevent potential hazards until proper repairs can be completed by licensed gas fitter.
Completed full air conditioning system replacement including outdoor condensing unit and indoor evaporator coil. Installed new condenser on existing concrete pad with proper clearances, connected refrigerant lines, and verified electrical connections. Replaced indoor A-coil in existing ductwork, ensuring proper airflow integration with furnace system. Evacuated and charged system to manufacturer specifications, tested all safety controls, and confirmed proper operation and cooling performance.
Performed estimate for complete replacement of two residential HVAC systems, both over 10 years old with one unit experiencing compressor failure. Assessed exterior ground-level unit with straightforward accessibility and second unit located in crawlspace, documented existing equipment conditions and site access requirements for full system changeout.
Responded to no cooling call on aging air conditioning system. Upon inspection, accessed ductwork through wall opening to diagnose airflow restrictions and verify proper system operation. Measured and documented access point dimensions for potential future service requirements.
Responded to service call for Honeywell thermostat displaying system as running but not activating Carrier HVAC units. Inspected control board wiring and thermostat connections at terminal strip, verified proper wire terminations for heating and cooling circuits, and confirmed control board functionality. System restored to normal operation with thermostat properly communicating with HVAC equipment.
Performed commercial preventive maintenance agreement service on rooftop unit requiring 15-20' ladder access. Completed inspection of RTU cooling system components including compressor, refrigerant lines, and condenser coils. Installed pleated filters per special customer request specifications. Documented equipment condition with temperature readings and visual inspection of internal components showing moderate dust accumulation on ductwork and surfaces. Verified compressor operation, checked refrigerant line connections, and inspected copper coil assemblies and condenser fins. Unit operating within normal parameters upon completion of maintenance service.
Provided comprehensive estimate for complete air conditioning system replacement. Assessed existing outdoor condenser unit positioned on concrete pad against exterior brick wall, documenting current equipment condition and installation configuration. Presented customer with replacement options and specifications for new HVAC system installation.
Completed full air conditioning system installation including replacement of outdoor condenser unit and indoor evaporator coil. Installed new 6-inch return air box with 20x25x1 filter rack and filter to improve air circulation and filtration. System was evacuated to 365 microns to ensure proper vacuum levels, refrigerant lines were installed with insulation, and all electrical and condensate connections were completed. Unit was tested and verified operational with proper airflow and cooling performance.
Responded to no cooling complaint on residential AC unit installed less than two years prior. Upon inspection, measured supply air temperature at 50.3°F at the evaporator coil, indicating system is producing adequate cooling but insufficient airflow or distribution issues may be present. Documented conditions of air handler compartment and concrete pad showing moisture staining, suggesting potential condensate drainage concerns that require monitoring.
Responded to no cooling complaint on residential air conditioning system. Upon inspection, identified and replaced failed filter-drier in refrigerant line circuit. System restored to proper cooling operation and verified satisfactory performance before departure.
Completed preventive maintenance agreement service on one condenser unit and two rooftop units. Accessed equipment using 40-foot extension ladder, performed cooling system inspections including electrical component checks, verified capacitor connections and integrity, and documented equipment conditions with photographic records per agreement requirements.
Conducted on-site assessment of existing HVAC system for replacement estimate. The current air conditioning and heating unit, estimated to be 10-15 years old, was thoroughly evaluated in the basement utility area. Performed detailed measurements of the existing gray metal furnace/air handler cabinet to determine spatial requirements and clearances for potential replacement equipment. Documented vertical dimensions of the main unit and assessed the current ductwork configuration, including the cylindrical silver metallic supply duct with elbow connection to horizontal distribution system. Examined associated plumbing infrastructure, including copper refrigerant lines and condensate drainage components. Measured clearance beneath related plumbing fixtures to verify adequate space for new equipment installation. Photographed existing system components, manufacturer specification labels, electrical conduit routing, and mechanical connections to provide accurate documentation for replacemen
Responded to callback regarding humidity concerns following recent HVAC installation. Performed thorough inspection of attic-mounted air handler unit and associated ductwork to verify proper system operation and installation quality. Examined flexible duct runs, insulation placement, condensate drainage system, and equipment mounting to ensure all components were installed per manufacturer specifications and operating correctly to maintain proper humidity control throughout the home.
Completed full replacement of residential air conditioning system and Unico high-velocity HVAC system in attic space. Removed existing equipment and installed new evaporator coil unit with horizontal fin heat exchanger, mounted securely to roof structure underside. Connected black flexible insulated ductwork to evaporator unit and secured all runs with appropriate strapping to wooden beams. Installed white PVC condensate drain lines from unit base for proper drainage. Wrapped all ductwork with reflective silver foil-backed insulation to maximize efficiency and prevent heat transfer in attic environment. Routed large flexible metal ductwork throughout attic space following existing pathways, ensuring proper support and connection points. Positioned rectangular HVAC air handler unit on wooden platform with proper clearances for service access. Verified all duct connections are sealed and insulated per manufacturer specifications. Installation required two technicians working full day to
Performed annual maintenance inspection on central air conditioning condenser unit. Notified customer that current maintenance agreement has expired and provided options for service renewal or one-time maintenance fee to complete the scheduled preventive maintenance work.
Diagnosed failed compressor on high velocity HVAC system with contaminated and overcharged refrigerant. Provided comprehensive estimate for full system replacement including outdoor condensing unit and associated components to restore proper operation.
Completed preventative maintenance inspection on condenser unit as part of annual HVAC maintenance agreement. Verified all ductwork connections and insulation integrity in attic space, confirmed proper airflow distribution throughout flexible duct system, and replaced MERV 8 air filter at indoor air handler location. All system components operating within normal parameters with no deficiencies noted.
Responded to emergency service call for a one-year-old gas water heater experiencing improper venting issues. Upon arrival, inspected the Rheem brand water heater installation in the basement utility room and assessed the complete venting system running through the ceiling joists and attic space. Examined the existing vent pipe configuration, including the flexible ductwork, rigid metal ductwork components, and all connection points from the appliance draft hood through the termination point. Identified venting deficiencies preventing proper exhaust of combustion gases. Corrected the venting system to ensure proper draft and compliance with manufacturer specifications and local code requirements. Verified all duct connections were properly sealed and secured. Tested the water heater operation, confirmed proper venting function, and verified adequate combustion air supply. System restored to safe operating condition with proper exhaust ventilation established.
