Your HVAC Questions Answered: Maintenance Tips and Expert Advice

Most HVAC problems develop slowly through skipped maintenance and ignored warning signs. At J & E Heating and Cooling LLC in Racine, WI, we believe an informed homeowner is a better-prepared homeowner. Below are the questions we hear most often—with honest answers about not just what to do, but why it matters. Call us anytime at 262-672-9844.

Frequently Asked Questions

  • Q: How often should I have my HVAC system serviced?

    A: Twice a year — spring before cooling season and fall before heating season. Servicing both systems before peak demand gives your technician the chance to catch issues before they become breakdowns on the hottest or coldest day of the year.

  • Q: How often should I change my air filter?

    A: Every 30 to 90 days for standard 1-inch filters; every 6 to 12 months for thicker 4- or 5-inch media filters. A clogged filter forces the blower motor to work harder, raises energy bills, and can freeze the evaporator coil or overheat the heat exchanger—both expensive repairs that a $10 filter change prevents.

  • Q: Why is my home still humid with the A/C running?

    A: Air conditioners control temperature, not humidity. When humidity is the problem, the right solution is a whole-home dehumidifier — not running the A/C colder, which wastes energy and strains the equipment without fixing the root cause.

  • Q: My home has hot and cold spots. Do I need a new system?

    A: Usually not. Hot and cold spots are most often caused by unbalanced ductwork, improperly sized equipment, or rooms with unusual heat loads. An HVAC zoning system is frequently the most cost-effective fix, allowing different areas to be conditioned independently without a full replacement.

  • Q: Why does my boiler make a banging noise?

    A: That is called "kettling"—limescale buildup on the heat exchanger causes trapped water to boil rapidly. Beyond the noise, it forces the system to work harder and can lead to heat exchanger failure, one of the costliest boiler repairs. Annual servicing catches and clears it before that happens.

  • Q: Why is my air conditioner freezing up?

    A: Almost always restricted airflow or low refrigerant. A clogged filter is the most common culprit. Ice buildup can damage the compressor—the most expensive component in the system—so turn the unit off and call us at 262-672-9844 promptly if you see frost or ice.

What Homeowners Can Do vs. When to Call a Pro

You can safely handle filter replacements, keeping the outdoor unit clear of debris, and checking thermostat batteries. Everything else — refrigerant work, heat exchanger inspection, gas line adjustments, electrical repairs, and ductwork modifications — requires a licensed professional. Refrigerant handling is federally regulated. A cracked heat exchanger is a carbon monoxide risk. These are not DIY situations.

Ready to Schedule Service?

J & E Heating and Cooling LLC has served Racine, WI, for years with over 60 years of combined experience, EPA and HVAC certifications, and a commitment to honest, reliable workmanship. We are family-owned, licensed, bonded, insured, and available 24/7 for emergencies. Call 262-672-9844 today.

Still have questions? Call J&E Heating and Cooling LLC at 262-672-9844 in Racine, WI — we're here 24/7!