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If your cooling system is outdated or beyond repair, we offer energy-efficient AC replacements designed to keep your home comfortable while saving on energy costs.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 15 jobs in Lincolnwood, IL between February 2026 and May 2026.
The most recent job was on May 29, 2026.
Job Locations and Reviews
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.
# HVAC Complete System Installation Successfully completed a full HVAC system replacement in residential attic space. Removed existing equipment and installed new Carrier air handler unit with integrated coil, mounted on reinforced platform stand for proper support and drainage. Installed Honeywell media air filter box adjacent to air handler for enhanced air quality and system protection. Connected white PVC condensate drainage lines with proper pitch to ensure efficient moisture removal from system. Ran and terminated all necessary electrical wiring to new equipment per manufacturer specifications and local code requirements. Installed new outdoor condensing unit and connected refrigerant lines between indoor and outdoor components. Replaced existing thermostat with new programmable unit and verified proper communication with HVAC system. Tested all system functions including heating and cooling modes, verified proper airflow through ductwork, and confirmed condensate drainage opera
Completed comprehensive air conditioning tune-up and maintenance service. Performed thorough inspection of HVAC system including furnace, ductwork, and Aprilaire humidifier in basement mechanical room. Cleaned blower wheel which had accumulated significant dust and debris buildup, restoring proper airflow and system efficiency.
Performed comprehensive estimate for full-system HVAC replacement on second-floor zone serving top level of residence. Existing 22-year-old system located in attic space accessed via pull-down ladder. Documented current equipment dimensions and existing ductwork configuration, including silver flex duct and metallic-wrapped supply runs. Assessed attic conditions, noting Johns Manville insulation installation between rafters and available clearances for new equipment placement. Measured air handler footprint to determine proper sizing and compatibility for replacement unit installation.
Installed dedicated water line from existing reverse osmosis filtration system to refrigerator, establishing continuous filtered water supply. Routed tubing from under-sink RO unit through cabinetry and along baseboard to refrigerator connection point, securing line at multiple intervals to prevent displacement. Connected supply line to RO system output valve and terminated at refrigerator inlet, ensuring proper fitting connections and testing for leaks upon completion.
# HVAC Install - Boiler Completed full boiler system replacement including new indirect water heater tank and comprehensive reverse osmosis water treatment system. Installation performed by three-person crew consisting of lead technician, helper, and licensed plumber over one-day period. ## Work Performed Removed existing boiler and indirect tank, then installed new high-efficiency boiler system with indirect-fired water heater for domestic hot water supply. Completed all necessary piping connections, gas line modifications, and venting requirements per manufacturer specifications and local code requirements. Installed complete reverse osmosis water filtration system within cabinet enclosure, featuring multi-stage filtration assembly with pressure tank, booster pump, and sediment/carbon filter housings. System mounted on plywood base with proper drainage and electrical connections. Configured PVC manifold with appropriate shut-off valves and connection points for system maintenance
Provided estimate for water heater replacement in extremely confined mechanical space with approximately 6-inch clearance access. Installation will require navigating complex existing plumbing infrastructure including copper supply lines, PVC drainage, and multiple valves and fittings in tight overhead configuration beneath floor joists with acoustic tile ceiling system.
Responded to no hot water complaint and performed system inspection. Upon arrival, found boiler system with significant rust staining on drip pan and visible moisture accumulation, indicating potential leak or condensation issue. Inspected water heater, furnace connections, and associated copper piping throughout utility closet. Identified aging copper pipes with oxidation and discoloration. Checked all valves, fittings, and colored hose connections between components. Addressed immediate issue to restore hot water service and documented equipment condition for customer awareness of system age and wear patterns.
Completed quarterly maintenance agreement service on single condensing unit and water heater inspection. Performed standard maintenance procedures on outdoor condenser including electrical component inspection, capacitor testing, and contactor evaluation. Inspected Rheem Performance Plus water heater, verified proper operation of temperature and pressure relief valve, and checked plumbing connections. Installed 20x25x1 air filter and left additional filter on-site to compensate for missed February quarterly filter change per maintenance agreement schedule.
Completed cooling call on residential air conditioning system. Changed out 20x25x1 air filter with new GS (Goodman Standard) filter. Verified proper airflow through return air plenum and confirmed system operation. Unit running within normal parameters upon departure.
Performed diagnostics and service on customer's humidifier system that was experiencing dripping issues. Inspected brass valve assembly and plumbing connections, finding mineral buildup on the internal filter mesh. Cleaned filter element, adjusted water feed connection, and verified proper operation with no further leakage observed.
Responded to callback for furnace not turning on. Verified thermostat was functioning correctly in heat mode, with thermostat reading 75°F and independent UEI thermometer confirming 75.5°F ambient temperature. Customer was on-site during service.
Responded to customer complaint of noise from HVAC unit installed in November. Performed diagnostic inspection of furnace components with focus on the inducer motor and blower assembly. Determined noise was originating from the inducer motor fan blade which had become slightly unbalanced. Adjusted and secured fan blade assembly to eliminate vibration noise. Unit now operating normally with no unusual sounds.
