Highland, IN Heating System Repairs: 5 Common HVAC Issues

Estimated Read Time: 10 minutes

A furnace failure on a lake‑effect winter night is stressful. If you are searching for furnace repair near me, here are the top five furnace issues we see in Northwest Indiana and how to fix them fast. We will show you quick, safe checks you can do now, what needs a pro, and how to avoid another breakdown. Bonus: limited‑time $69 heating tune‑up and a free service call with any paid repair can save you money today.

1) Furnace will not start or blows cold air

When a furnace does not start or only blows cold air, start with simple checks before assuming costly repairs.

Quick homeowner checks:

1. Thermostat
   • Set to Heat and fan Auto.
   • Raise setpoint 3 to 5 degrees above room temp.
   • Replace batteries if the screen is dim or blank.
2. Power and switch
   • Check the furnace switch near the unit. It should be On.
   • Verify the breaker is not tripped. Reset once if needed.
3. Air filter
   • A clogged filter can overheat the furnace and shut it down. Replace if dirty.
4. Gas supply
   • Ensure the gas valve handle is parallel to the pipe. If you smell gas, evacuate and call a professional immediately.

Professional fixes we perform:

• Igniter or flame sensor cleaning and replacement. A fouled sensor prevents the burner from staying lit.
• Pressure switch testing and hose inspection for cracks or blockages.
• Control board diagnostics and safe wiring repair.
• Combustion analysis to confirm proper fuel‑air mix and to prevent carbon monoxide risk.

Why it happens here:

• In Crown Point, rapid freeze‑thaw cycles can create condensate drain clogs that trip safety switches in high‑efficiency furnaces.

Callout from a customer:

"The HVAC tech was knowledgeable and professional. Pricing and payment options were flexible and affordable. Highly recommend!"

2) Short cycling or frequent on‑off starts

Short cycling wastes energy and puts extra wear on parts. It usually signals an airflow, sizing, or safety control issue.

Quick homeowner checks:

1. Filter first
   • Replace a dirty filter. Blocked airflow overheats the heat exchanger and triggers limit switches.
2. Vents and registers
   • Open at least 80 percent of supply registers. Do not close vents to “push” heat elsewhere.
3. Thermostat placement
   • If the thermostat sits near a heat source or a sunny window, it can shut the furnace off early.

Professional diagnostics we run:

• Detailed inspection and targeted diagnostic tests to pinpoint the root cause. We verify temperature rise, check static pressure, and read fault codes.
• Heat exchanger safety review. Overheating can signal a failing blower or undersized ductwork.
• Condensate trap and drain cleaning on high‑efficiency models.
• Gas pressure and combustion tune for stable burns.

Local insight:

• Older homes in Hammond and Gary often have mixed duct sizes from past remodels. Static pressure imbalances can cause short cycling until ducts are corrected.

Callout from a customer:

"Donnell was exceptional... his knowledge of the heating system was immediately clear."

3) Loud noises: banging, squealing, or rattling

Some noise is normal at startup. Persistent banging, squeals, or rattles mean something needs attention.

What you can check safely:

1. Loose panels
   • Tighten the front service panel screws so the safety switch fully engages and panels do not rattle.
2. Filter and vents
   • Restore airflow. Starved airflow makes blowers howl and ducts pop.

Common professional fixes:

• Squealing
  • Worn blower belt or failing motor bearings. We align pulleys, tension belts, or replace motors.
• Banging or booming at ignition
  • Delayed ignition from dirty burners. We clean burners, verify gas pressure, and check igniters.
• Rattling
  • Loose duct connections or failing blower wheel. We secure ducts, rebalance, or replace wheels.

Safety note:

• A sharp boom at startup can signal unburned gas. Do not keep cycling the furnace. Call for service.

Callout from a customer:

"Mike and his helper... removed a heater from my boiler system quickly and efficiently."

4) Weak airflow or some rooms stay cold

Uneven heat is common in two‑story homes and remodeled spaces. If the furnace runs but rooms stay chilly, focus on airflow and distribution.

Steps you can take:

1. Filter and returns
   • Replace the filter and clear furniture from return grilles.
2. Registers
   • Open supply registers fully. Partially closed registers raise duct pressure and reduce total airflow.
3. Fan setting
   • Try running the fan On for 30 to 60 minutes to even out temperatures after a long setback.

Professional solutions we provide:

• Blower performance test and speed adjustment to match duct static pressure.
• Duct sealing and balancing. Leaky basements and attics waste heat and starve far rooms.
• Zoning or bypass fixes for homes with additions.
• Indoor air quality upgrades like high‑efficiency filtration that maintain airflow.

Local insight:

• In Merrillville and Schererville, many homes have long trunk runs to bonus rooms. Adding balancing dampers or modest duct changes often solves the cold‑room problem.

Callout from a customer:

"Rob even cleaned up a sawdust pile I left behind! He also gave us some good tips to keep our furnace running smooth."

5) Rising energy bills or the furnace runs nonstop

If bills spike or the system seems to run all day, it might be an efficiency or control issue.

Simple checks first:

1. Thermostat programming
   • Use a steady schedule. Avoid large temperature swings that force long recovery times.
2. Filter again
   • A 5‑minute filter swap can cut runtime and improve comfort immediately.
3. Weatherstripping
   • Seal door and window leaks. Heat loss can mimic a furnace problem.

Professional fixes we handle quickly:

• Combustion tune and burner cleaning. Restores efficiency and stable flames.
• Heat exchanger inspection for cracks or scaling that reduce heat transfer.
• Fan speed and gas pressure set to factory specs.
• If the system is 15 to 20 years old, we provide replacement options. Modern high‑efficiency furnaces paired with clean ducts can lower heating costs significantly.

Customer experience:

"I knew the system was old but not 23. So a new system is being delivered and installed tomorrow. I’m very satisfied with the whole process!"

What you should not DIY

Some tasks are unsafe without training and instruments.

• Gas valve adjustments or control board rewiring.
• Heat exchanger inspection or combustion analysis.
• Sealed‑combustion venting and condensate repairs.
• Carbon monoxide testing.

We are fully licensed, BBB accredited, and our technicians are drug tested and background checked. For your safety, let a pro handle these items.

Prevent the next breakdown with smart maintenance

Most furnace failures we see in winter could have been prevented with a fall tune‑up.

What our tune‑ups include:

1. Combustion analysis and burner cleaning.
2. Heat exchanger and safety control inspection.
3. Static pressure and airflow test with filter check.
4. Electrical check, amp draws, and system calibration.

Why it matters in Northwest Indiana:

• Lake‑effect moisture plus road salt in garages can corrode components. Early checks keep your system safe and efficient.

Our recurring plan:

• Ask about our 24/7 Service Plan for priority scheduling, seasonal tune‑ups, and repair discounts. Members jump the line during cold snaps.

When repair vs replace makes sense

We help you decide with up‑front pricing and a price‑match guarantee.

Consider replacement when:

1. Your furnace is 15 to 20 years old and has frequent repairs.
2. The heat exchanger is cracked or parts are obsolete.
3. Energy bills are high despite proper maintenance.

Why homeowners choose us for installs:

• Free estimates and flexible financing. Some options are as low as $75 per month on qualifying high‑efficiency furnaces, subject to credit approval.
• Proper sizing and duct evaluation so your new system heats every room evenly.
• Industry‑leading warranties for peace of mind.

Service coverage:

• We serve Crown Point, Hammond, Gary, Merrillville, Schererville, East Chicago, Highland, Munster, St. John, and Dyer.

Fast help when it cannot wait

If your heat is out at night or on a weekend, we offer 24/7 emergency response. Local technicians arrive quickly with well‑stocked vehicles to deliver same‑day solutions whenever possible.

Serious signs to call now:

• You smell gas or see a “check carbon monoxide” alert.
• The furnace repeatedly trips the circuit breaker.
• You hear booming at startup or metal‑on‑metal scraping.

We will provide clear options, the price you approve before work, and repairs backed by strong warranties.

Special Offers to Fix It Fast and Save

• Heating tune‑up for $69. Terms and conditions apply. Must present coupon at time of service and schedule by 1/31/26.
• Free service call with any paid repair. This month only. Mention the online special when you schedule.
• Free estimates and financing options on new heating installations. Payments as low as $75 per month on a qualifying high‑efficiency furnace. Call for details.

Call (219) 500-8867 or schedule at https://www.summersphc.com/crown-point/ and mention the $69 Tune‑Up or Free Service Call offer when booking.

Frequently Asked Questions

How often should I change my furnace filter?

Change 1‑inch filters every 1 to 2 months during heating season. High‑MERV or media filters can last 3 to 6 months. Replace sooner if you have pets or heavy dust.

Is it safe to relight my own furnace?

You can relight a standing pilot if you follow the manufacturer’s steps. If you smell gas, stop and call a professional. Never attempt repairs on electronic ignition systems.

What does a professional furnace tune‑up include?

Our tune‑up checks combustion, safety controls, heat exchanger, blower, electrical, static pressure, and filter. We clean burners and calibrate for safe, efficient operation.

Why does my furnace keep turning on and off?

Likely airflow blockage, dirty filter, thermostat placement, or a safety switch trip. Replace the filter and check vents. If it continues, schedule a diagnostic.

When should I replace instead of repair?

If your furnace is 15 to 20 years old, has frequent breakdowns, or a failed heat exchanger, replacement often saves more in utilities and repairs long term.

Wrap Up

These five furnace problems cover most no‑heat and comfort calls we see. Use the safe checks above, then call our licensed team for fast diagnostics and lasting repairs. For trusted furnace repair near me in Crown Point and the surrounding Northwest Indiana area, we are ready to help 24/7.

Call, Schedule, or Chat

• Call now: (219) 500-8867
• Book online: https://www.summersphc.com/crown-point/
• Active savings: $69 Heating Tune‑Up through 1/31/26 and Free Service Call with any paid repair this month. Mention these when you schedule.

Call (219) 500-8867 or book at https://www.summersphc.com/crown-point/ for same‑day furnace service. Ask about the $69 Tune‑Up and Free Service Call with any paid repair to save today.

About Summers Plumbing Heating & Cooling

For more than 40 years, Summers Plumbing Heating & Cooling has kept Northwest Indiana homes warm and safe. We are BBB accredited, fully licensed, and our technicians are drug tested and background checked. Expect up‑front pricing, a price‑match guarantee, and industry‑leading warranties. We provide 24/7 emergency service, same‑day repairs, and flexible financing for replacements. Local techs know Crown Point winters and lake‑effect cold, so we size and install the right system for your home.