Wilmette Service Overview
- East Wilmette: The Bahá’í House of Worship is the landmark most people immediately associate with Wilmette. One of only eight in the world, its North American location draws international visitors and anchors the eastern side of the village near Lake Michigan.
- Downtown Wilmette: Green Bay Road and Wilmette Avenue form the downtown shopping and dining core, while the Wilmette Block Party brings sponsor booths, food vendors, a Kids Zone, and multiple music acts to the area.
- West Wilmette: Mallinckrodt Park serves West Wilmette, with neighborhoods stretching west toward the park and a larger share of post-war housing than the lakefront side.
A boiler call near the Kenilworth border, an AC problem close to Gillson Park, and a plumbing repair west of Green Bay Road can all land on the same Wilmette service schedule. The village includes large lakefront properties, busy residential streets near downtown, and neighborhoods stretching west toward Mallinckrodt Park, which means the systems we encounter can vary just as much as the addresses.
Deljo Heating, Cooling & Plumbing provides heating, air conditioning, plumbing, and indoor air quality service throughout Wilmette and the 60091 ZIP code. Call 773-829-4295 or contact us online to schedule service for your home.
Deljo Service Throughout Wilmette’s Distinct Residential Areas
The Bahá’í House of Worship is the landmark most people immediately associate with Wilmette. One of only eight in the world, its North American location draws international visitors and anchors the eastern side of the village near Lake Michigan.
Move west and the local reference points change. Plaza del Lago and Gillson Park help define the lakefront side, Green Bay Road and Wilmette Avenue form the downtown shopping and dining core, Mallinckrodt Park serves West Wilmette, and the Kenilworth border includes some of the highest-value residential properties in the region.
The Wilmette-Kenilworth Chamber of Commerce also maintains a year-round calendar that includes music, theater, sidewalk sales, and workshops. These different residential, commercial, recreational, and community areas are all part of the same 60091 service territory.
Solving HVAC, Plumbing & Indoor Air Quality Issues in Wilmette
Problem: Nearly 30% of Wilmette housing was built before 1939, and boilers and steam systems remain especially relevant in that older segment. At the same time, central furnaces are common across the village’s large single-family housing stock.
Solution: High-efficiency furnace replacement gives homeowners another option when an existing system is ready for an upgrade. Boiler replacement can be a more significant project, especially in older properties where the heating system has been part of the house for decades.
Problem: The village’s largely owner-occupied single-family housing creates demand for everything from everyday repairs to larger upgrades involving piping, fixtures, water heaters, and sewer lines.
Solution: A smaller service call may involve a clogged drain or fixture problem, while another home may need repiping, sewer work, or a broader plumbing update.
Problem: Large residences in East Wilmette and near the Kenilworth border can make whole-home comfort more complicated than setting one thermostat and forgetting about it.
Solution: Smart zoning and upgraded thermostat controls give homeowners another way to manage different parts of the property without treating the entire house as one comfort zone.
Heating Service for Wilmette’s Furnaces, Boilers & Steam Systems
Drive from East Wilmette toward Green Bay Road or farther west, and the residential setting changes quickly. Nearly 30% of Wilmette housing was built before 1939, and boilers and steam systems remain especially relevant in that older segment. At the same time, central furnaces are common across the village’s large single-family housing stock.
For Wilmette heating needs, Deljo handles:
- Heating installation
- Heating repair
- Heating maintenance
- Furnace service and replacement
- Heat pump service
- Boiler service
High-efficiency furnace replacement gives homeowners another option when an existing system is ready for an upgrade. Boiler replacement can be a more significant project, especially in older properties where the heating system has been part of the house for decades.
The Wilmette Historical Museum helps document just how far back the community’s residential history reaches, tracing local development from the 1830s onward. That history remains visible in the range of heating equipment found throughout 60091, from older boiler infrastructure to modern furnaces and controls.
“Matt was fantastic! He was considerate, thorough, informative and timely. He was very courteous and explained all the steps he took very well. Really appreciated working with him and felt very confident with the work performed. Overall, a real professional. Thank you, Matt, and Deljo!”
Michael M
Stay warm all winter long! Call Deljo at 773-829-4295 or schedule your heating service online today.
Wilmette Plumbing Repair, Water Heaters & Drain Service
Plumbing work takes us through every part of Wilmette, including residential streets around the Green Bay Road and Wilmette Avenue business district and neighborhoods farther west near Mallinckrodt Park. The village’s largely owner-occupied single-family housing creates demand for everything from everyday repairs to larger upgrades involving piping, fixtures, water heaters, and sewer lines.
Our plumbing services include:
- Emergency plumbing services
- Drain cleaning
- Water heaters
- Whole-home water filters
- Pipe repair
- Frozen pipe service
- Flood control
- Sump pumps
- Plumbing fixtures
- Repiping
- Sewer lines
- Showers and bathtubs
Water heater replacement, drain service, and fixture upgrades are common needs for Wilmette homeowners. A smaller service call may involve a clogged drain or fixture problem, while another home may need repiping, sewer work, or a broader plumbing update.
Mallinckrodt Park serves as a major recreation hub in West Wilmette and hosts neighborhood-level programming. That part of the village has a larger share of post-war housing than the lakefront side, adding another layer to the mix of plumbing systems Deljo encounters across Wilmette.
“The entire crew was wonderful – from Patrick who had to get all the specs and pricing, to the office staff who had to order parts and coordinate obtaining a crane and refuse pick up and billing, to the 2 crews of 5 I think (sorry I don’t remember their names) who were punctual, clean, knowledgeable, and polite. Can’t ask for much more – replaced 1 boiler and 1 hvac furnace all in a matter of only 3 or 4 days from diagnosis to installation.”
Larry S
Facing a drain clog, water heater issue, or pipe repair? Call 773-829-4295 now for fast, expert plumbing service in Wilmette!
AC Repair & Installation in Wilmette, IL
East Wilmette gives cooling service a distinctly local backdrop. Gillson Park and Beach provides beach access, sailing, and nature programming along Lake Michigan, while nearby Plaza del Lago serves as a lakefront shopping and dining destination. The surrounding area includes some of Wilmette’s larger residential properties.
When cooling equipment needs attention, Deljo provides:
Central air conditioning is common throughout Wilmette, and high-efficiency replacement is an important option for homeowners replacing existing systems. Ductless equipment provides another cooling choice when a homeowner wants a different approach for a particular space or area of the house.
Downtown Wilmette brings another kind of activity around Green Bay Road and Wilmette Avenue. The annual Wilmette Block Party fills the area with sponsor booths, food vendors, a Kids Zone, and multiple music acts. Whether we are working near that downtown core or closer to the lakefront, cooling service starts with finding out why the current system is not delivering what the homeowner needs.
“The crew that was sent were professional, tidy and extremely knowledgeable. They excelled in everything– timeliness, thoroughness and superlative, professional competency from beginning to end. The entire process went super smoothly and every detail was seen to. Fantastic, can’t say enough good things!!”
Johnny
Beat the summer heat with reliable AC repairs and cooling upgrades. Call 773-829-4295 to book your cooling service!
Indoor Air Quality & Zoned Comfort for Wilmette Homes
Large residences in East Wilmette and near the Kenilworth border can make whole-home comfort more complicated than setting one thermostat and forgetting about it. Smart zoning and upgraded thermostat controls give homeowners another way to manage different parts of the property without treating the entire house as one comfort zone.
Deljo’s indoor air quality and comfort services include:
- Air duct cleaning
- Aeroseal
- Indoor air quality inspection and testing
- Air filtration
- Purifying ionizers
- Air purifiers
- Whole-home humidifiers
- Whole-home dehumidifiers
- Thermostats
- AC coil and condenser cleaning
Filtration and purification give homeowners ways to address the air moving through the HVAC system, while humidifiers and dehumidifiers provide additional control over indoor moisture. Zoning and thermostat upgrades can add another level of control to the heating and cooling system itself.
Go Green Wilmette also organizes environmental stewardship programming within the community. That local emphasis on efficiency fits naturally with homeowners considering high-efficiency equipment, smart controls, and broader improvements to the way their home comfort systems operate.
Heating, AC & Plumbing Help When You Need It in Wilmette
Maybe the issue is a boiler that needs attention near East Wilmette, an AC system serving a home around Gillson Park, or a plumbing problem closer to Green Bay Road, Mallinckrodt Park, or the Kenilworth border. Deljo Heating, Cooling & Plumbing works throughout those different parts of 60091, with service for furnaces, boilers, air conditioners, plumbing systems, and whole-home air quality equipment.
Your home does not need a generic recommendation based on the ZIP code. It needs the right diagnosis and a clear solution for the system you actually have. Call 773-829-4295 or contact Deljo online to schedule heating, cooling, plumbing, or indoor air quality service in Wilmette.
Frequently Asked Questions
Do you provide emergency plumbing in Wilmette?
A: Yes. We provide 24/7 emergency phone intake across Wilmette to ensure your plumbing emergency is logged immediately for priority dispatch as quickly as possible.
How often should I schedule furnace or AC service?
A: We recommend a yearly tune-up for each system. This means you should schedule furnace service in Wilmette, IL, each fall and air conditioner service in Wilmette, IL, each spring.
Can you work on both furnaces and boilers?
A: Absolutely. We handle both furnace repair in Wilmette, IL, and boiler repair in Wilmette, IL, ensuring you’re covered no matter what type of heating system you own.
Page Updated on September 19, 2026
Recent Jobs and Reviews in Wilmette, IL
Wilmette, IL at a glance
Deljo Heating, Cooling & Plumbing has completed 20 jobs in Wilmette, IL between April 2026 and May 2026.
The most recent job was on May 14, 2026.
Deljo Heating, Cooling & Plumbing has completed 86 jobs in Wilmette, IL in the last 12 months.
Job Locations and Reviews
Completed full HVAC system replacement including condenser unit, air handler, and evaporator coil with Unico/Bosch equipment. Removed existing equipment and installed new components over 1.5-day period with three-person crew. All electrical connections were properly terminated at terminal blocks with color-coded wiring per manufacturer specifications. Control wiring was routed through flexible metal conduit for protection and secured to mounting brackets within the air handler enclosure. Verified all terminal connections were tight and properly numbered for future service reference. System was tested and confirmed operational upon completion.
Completed routine HVAC maintenance agreement service on residential air conditioning system. Changed 16x20x1 air filter and performed general system check, confirming outdoor condenser unit operational status with proper clearance and normal wear patterns consistent with regular use.
Completed preventive maintenance agreement service on single air conditioning system. Connected manifold gauges to measure refrigerant pressures and recorded supply air temperature of 53°F at register, confirming proper system operation and cooling performance within manufacturer specifications.
Replaced existing thermostat in master bedroom with new Tekmar 561 digital programmable thermostat. Unit was mounted on interior wall, wired to system, and verified operational with proper temperature display and control functionality.
Performed comprehensive maintenance on two condenser units as part of seasonal agreement service. Inspected HVAC system components including air filtration, noting dust accumulation on pleated filters in mechanical room, and verified thermostat operation displaying proper temperature readings and scheduling functions.
Completed cooling check on two residential air conditioning systems as part of Gold Service agreement. Verified thermostat operation showing proper temperature control set to 70°F cooling mode, inspected upstairs HVAC installation including furnace and Aprilaire air quality equipment with all components and ductwork in good working condition with no visible defects or maintenance concerns noted.
# HVAC Service Report Responded to no cooling complaint affecting primary room and main office. Inspected residential HVAC system including high-efficiency furnace, air handler, and associated ductwork in mechanical room. Verified system operation and addressed airflow issues preventing proper cooling to affected zones. System restored to normal operation with adequate cooling delivery to both previously affected areas.
Completed comprehensive assessment of two complete HVAC systems, both 22 years old and operating with obsolete R22 refrigerant. Documented existing Trane furnace unit with integrated ventilation system and Aprilaire Media Air Cleaner Model 2400. Both air conditioning systems have reached end of serviceable life due to phased-out refrigerant and age-related obsolescence. Recommended complete replacement of both full systems to restore reliable climate control and improve energy efficiency.
Performed routine maintenance on residential air conditioning system under service agreement. Changed out 16x25x1 filter and conducted system diagnostics, including electrical readings on compressor unit showing 140.2V and 81.1A, and static pressure measurements at ductwork junction reading 93.73, confirming proper system operation and airflow.
Completed HVAC estimate for replacement of 10-year-old attic furnace unit experiencing multiple critical failures including defective ECM motor, oil leak, and improperly installed flue pipe. Documented existing system configuration with air handler and ductwork in attic space, photographed current thermostat displaying 69°F setting, and assessed customer's request for equipment relocation to washing machine room for improved accessibility and serviceability.
Completed scheduled AC maintenance on two condenser units, performing full system inspection and testing. Replaced failed fuse disconnects on outdoor equipment and verified proper electrical connections throughout both systems. Installed new Ecobee smart thermostat for upstairs zone, ensuring proper wiring configuration and system communication with HVAC equipment.
Completed comprehensive whole home plumbing inspection examining all accessible fixtures, supply lines, drain systems, and connections throughout the property. Inspected bathroom sink plumbing including chrome-plated supply lines with braided flexible hoses, shut-off valves, and white PVC P-trap configuration, confirming proper installation and absence of leaks. Evaluated laundry room plumbing connections for washing machine and dryer, checking drainage components and supply line integrity. All photographed areas showed proper plumbing installation with no visible defects or immediate concerns requiring repair.
Responded to no cooling call on 10+ year old AC system. Upon inspection, diagnosed faulty thermostat displaying incorrect temperature reading of 64°F. Removed and replaced malfunctioning thermostat control unit, verified proper wiring connections to circuit boards, and confirmed system restored to normal cooling operation.
Completed comprehensive whole home plumbing inspection for new customer enrollment. Conducted thorough examination of all accessible plumbing fixtures, supply lines, drain systems, and water-using appliances throughout the property. Inspected bathroom facilities including toilet operation, vanity plumbing connections, shut-off valves, and drainage performance. Evaluated shower enclosure plumbing system, examining handheld showerhead assembly, mounting hardware, water pressure, spray pattern functionality, and wall penetrations for proper sealing. Documented current condition of all plumbing components with photographic records for customer reference and future maintenance planning.
Returned to property to complete capacitor replacement on HVAC unit. Removed access panel to expose control board and capacitor assembly. Disconnected and removed failed capacitor from system. Installed new replacement capacitor with proper electrical connections and terminal configuration. Verified all wire connections were secure and properly seated. Tested system operation to confirm capacitor function and unit performance. Reinstalled access panel and restored unit to normal operation.
Responded to service call for multiple leaking exterior hose faucets. Upon arrival, located and inspected outdoor spigots obscured by dense ivy growth along exterior brick wall. Identified leaking gate valve-style hose bib with wheel handle requiring attention. Cleared vegetation as needed to access valve assembly and piping. Performed necessary repairs to eliminate water leakage from exterior faucet connections, ensuring proper seal and operation of valve mechanism.
Completed preventative maintenance inspection on rooftop cooling unit as part of service agreement. Inspected blower wheel assembly and motor, noting normal dust accumulation on blades consistent with operational use. Examined air filtration components including protective mesh screening, confirming all components in serviceable condition with no immediate repairs required.
Completed full HVAC system upgrade including removal of existing equipment and installation of new Carrier brand furnace unit. Installed new condensate drain system using white PVC piping with proper pitch and routing for efficient drainage. Connected refrigerant lines with appropriate insulation and secured all ductwork connections to the new furnace plenum. Configured silver metallic supply ductwork and ensured proper sealing at all joints. Installed new thermostat and humidifier as part of the complete system replacement. Verified all electrical connections, tested system operation, and confirmed proper airflow throughout the installation.
Completed furnace replacement for 20-year-old unit with cracked heat exchanger that was shut down for safety. New system installed in easily accessible utility space with proper clearances, condensate drainage lines, and electrical connections verified. Previous repair credit applied to replacement installation.
Completed comprehensive maintenance inspection and cleaning on two outdoor air conditioning units under preventative maintenance agreement. Performed standard tune-up procedures including condenser coil cleaning, refrigerant level verification, electrical connection inspection, and system performance testing on both units. Documented equipment conditions with photographic records showing exterior condensing unit installations and interior furnace/air handler components for maintenance history files.
