Sycamore, IL Heating & Cooling

Heating and Cooling for Sycamore’s Older Homes

The Sycamore Historic District has 187 contributing properties. Homes there run from the 1830s through the early twentieth century, most built between 1860 and 1900: Greek Revival, Italianate, Queen Anne. None of those houses was designed around a forced-air furnace, and a good number still aren’t.

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  • Daikin ductless trained
  • Boiler repair & service
  • ComEd Heat Pump-Trained
  • 24/7 emergency service

What That Means for Heating and Cooling

The district has been on the National Register since 1978. Here’s what that history means for your equipment.

Ductless

There May Be No Ductwork, and Adding It May Not Be Worth It

Threading duct through a house with plaster walls, no soffits and original trim means opening things that should stay closed. A ductless mini-split heats and cools the room without any ductwork. Our technicians hold Daikin TD-7 and TD-10 ductless training; this is its own skill set, not a sideline.

Plan first

The Condenser and Line Set Have to Go Somewhere

On a historic-district property that’s a real constraint, not an afterthought. Placement, line-set routing and how the penetration is finished are worth discussing before anyone orders equipment.

Repair first

If You Have a Boiler, It May Be Worth Keeping

A well-maintained hot-water or steam boiler outlasts nearly everything else in the house. We service and repair them, and we’ll say plainly when repair beats replacement.

A single-zone ductless system handles one room. A multi-zone system runs several indoor heads, wall, ceiling or floor mounted, off one outdoor unit, which keeps the number of condensers on a historic property down to one or two. See ductless mini-split installation.

Ductless for a House With No Ducts

A ductless mini-split is a heat pump: one outdoor unit, a refrigerant line set through a single three-inch opening, and an indoor head that both heats and cools. Cold-climate Daikin inverter systems keep heating well below zero, so in many Sycamore houses the mini-split carries the cooling season and the shoulder seasons, and the boiler or furnace takes the coldest weeks. The line set can run along a rear or side elevation inside a paintable line-hide, which keeps the street-facing facade clean.

Qualifying ductless systems earn a ComEd instant discount of $500 or $1,000 per unit off the invoice. We install Daikin and service mini-splits of any brand; see ductless mini-split repair and the ductless mini-split hub for single- and multi-zone options.

Boilers, Furnaces and Winter Humidity in Older Homes

Boiler service here starts with the basics that fail on an older system: pressure, circulators, relief valves, expansion tank, zone valves, low-water cutoff and the burner and venting. Cold radiators, kettling or banging, and pressure that climbs or drops are all repairable more often than not; see boiler repair. When the boiler is past saving, a condensing boiler replacement earns a Nicor Gas discount of $350, or $500 for a combination boiler that also makes domestic hot water, for Nicor Gas customers.

Older homes that were retrofitted with ductwork get the same measured approach: we test airflow and duct leakage on the retrofitted system before recommending a furnace repair or replacement. And because old houses swing hard and dry in winter, a whole-home AprilAire humidifier on the furnace or air handler is one of the cheaper comfort fixes we do.

What a Service Call Costs in Sycamore

Repairs start with a flat diagnostic fee to find the problem. During office hours (9 a.m. to 5 p.m., Monday through Friday) the service call is $130; weekday evenings after 5 p.m. it is $180, and nights, weekends and holidays are $260. Each includes 30 minutes of travel and 30 minutes of diagnostics, and parts are extra. Once we know what failed, you get a flat-rate repair price and approve it before any work starts. We repair every major brand, not only the Amana and Daikin equipment we install.

After-hours and emergency service calls are priced higher than business-hours calls, and we quote that on the phone before we dispatch. For no heat or no cooling right now, emergency furnace repair and emergency AC repair are answered 24/7 at (847) 224-2420.

Sycamore HVAC Services

Ductless mini-split installation for homes without ductwork, boiler repair and service, whole-home humidification for old houses that swing hard and dry in winter, and airflow testing on retrofitted duct systems. Each service below has its own page.

24/7 no heat

Furnace Repair in Sycamore

No heat, short cycling or a furnace that clicks and never lights, diagnosed and repaired on any brand.

Nicor discounts

Furnace Replacement in Sycamore

95% and 97% AFUE furnaces with the Nicor Gas instant discount taken off the invoice.

All brands

AC Repair in Sycamore

Capacitors, contactors, fan motors and refrigerant leaks on every major brand, priced before the work starts.

Free quotes

AC Replacement in Sycamore

R-32 equipment, sized from the house, with a free written quote and the old unit hauled away.

ComEd discounts

Heat Pump Installation in Sycamore

Cold-climate inverter heat pumps, including Amana S-Series, with $900–$2,000 off on qualifying ducted systems.

Hot-water & steam

Boiler Repair in Sycamore

Cold radiators, banging, pressure problems and lockouts on hot-water and steam boilers of any brand, with repair recommended when it beats replacement.

No ductwork

Ductless Mini-Split Installation in Sycamore

Daikin single and multi-zone systems for houses that were never ducted, with condenser and line-set placement planned around the house.

AprilAire

Indoor Air Quality in Sycamore

AprilAire whole-home humidifiers for dry winter air, plus dehumidifiers and media air purifiers on your existing furnace or air handler.

Any hour

Emergency Furnace Repair in Sycamore

No heat below freezing is an emergency. We answer around the clock and quote the after-hours call before we roll.

Any hour

Emergency AC Repair in Sycamore

AC not cooling in a July heat wave, handled the same day whenever we can get there.

$240 / year

Maintenance Plan in Sycamore

Spring and fall tune-ups, one free business-hours service call, priority scheduling and 5% off services.

Also available in Sycamore: air handler repair, smart thermostat installation, humidifier installation, dehumidifier installation, air purifier installation, duct cleaning and airflow diagnostics and dual-fuel heat pump and furnace systems.

Rebates in Sycamore

Qualifying ductless heat pumps are eligible for a ComEd instant discount applied at installation: $500 per unit under 1.5 heating tons or $1,000 at 1.5 tons and up, and $900–$2,000 on a qualifying ducted heat pump. See ComEd Instant Discounts.

Replacing a gas furnace or boiler? If you’re a Nicor Gas customer, the instant discount is $225 on a furnace at 97%+ AFUE or $150 at 95% AFUE, and $350 on a qualifying 95% AFUE boiler or $500 on a combination boiler, all taken off the invoice. See Nicor Gas Instant Discounts.

Sycamore HVAC FAQs

Can I cool a house with radiators and no ducts?

Yes. Ductless is the standard answer, and it heats as well as cools.

Will a mini-split look wrong on a historic house?

The indoor head is a design choice and the outdoor unit’s placement is negotiable. It’s worth walking the property before anything is ordered.

Is my boiler worth repairing?

Often, yes. Age, efficiency and what’s actually failed decide it.

Do I need a permit for HVAC work in Sycamore?

We file the permit where the city requires one and schedule any inspection as part of the job, so you don’t have to handle the paperwork.

What does an after-hours call cost in Sycamore?

After-hours and emergency service calls are priced higher than business-hours calls, and we quote the call on the phone before we dispatch. Repairs are flat-rate and approved by you before any work starts.

Do you service all brands, and how do I book?

Yes. We install Amana and Daikin and repair every major brand of furnace, air conditioner, heat pump, boiler and mini-split. Call (847) 224-2420 any hour, or book online and pick a time that works for you.

Other Towns We Serve

Don’t see your town? Call (847) 224-2420. View all service areas.

Comfort Without Compromising Your Old House

Ductless, boiler and furnace work planned around the house you have.

Call (847) 224-2420
Book Online

Planning a replacement? Request a free quote or see financing options.

Discount amounts reflect the 2026 Nicor Gas Energy Efficiency Program for qualifying equipment installed January 1 through December 31, 2026, and are subject to change or cancellation due to funding limits. Rest Assured HVAC LLC is an independent contractor and is not affiliated with or endorsed by Nicor Gas.

Discount amounts reflect the 2026 ComEd Energy Efficiency Program for qualifying equipment and are subject to change or cancellation due to funding limits. Rest Assured HVAC LLC is an independent contractor and is not affiliated with or endorsed by ComEd.