HVAC Tips, Articles & News

Welcome to the Berndt Climate Control LLC blog. We publish articles on heating, cooling, indoor air quality, energy efficiency, and HVAC maintenance to help homeowners and business owners make informed decisions about their HVAC systems. Browse our articles below.

Wisconsin winters are among the most demanding in the Midwest, with temperatures regularly dropping below zero. This comprehensive checklist covers everything homeowners should do before the heating season begins, from scheduling a professional tune-up to checking carbon monoxide detectors and stocking up on replacement filters.

Deciding whether to repair an aging air conditioner or invest in a replacement is one of the most common dilemmas homeowners face. We explain the key factors to consider, including system age, repair cost relative to replacement value, efficiency ratings, and the impact of R-22 refrigerant phase-out on older systems.

A dirty air filter is the single most common cause of HVAC problems, yet it is also the easiest to prevent. This article explains how often to change your filter, which filter types are best for different situations, and how a clean filter improves both system efficiency and indoor air quality.

Summer cooling bills can be surprisingly high in Wisconsin, especially during heat waves. We share practical tips for reducing your cooling costs without sacrificing comfort, including thermostat settings, ceiling fan use, window management, and when a system upgrade makes financial sense.

The EPA estimates that indoor air can be two to five times more polluted than outdoor air. This article explains the most common indoor air pollutants, their health effects, and the range of products available to improve the air quality in your home, from basic filtration upgrades to whole-home air purification systems.

Modern cold-climate heat pumps have improved dramatically and are now a viable option for Wisconsin homeowners. We compare heat pumps and gas furnaces on efficiency, operating costs, comfort, and upfront investment, and explain why a dual-fuel hybrid system may offer the best of both worlds.

If you have never had a new HVAC system installed, the process can seem daunting. This article walks you through every step, from the initial estimate and equipment selection to the installation day itself, system startup, and what to expect in the days and weeks after your new system is running.

Scheduling your air conditioning tune-up in spring — before the cooling season begins — is the best way to ensure your system is ready when you need it. We explain what a professional AC tune-up includes, why it matters for efficiency and reliability, and how to find a reputable HVAC contractor in your area.

SEER (Seasonal Energy Efficiency Ratio) is the primary measure of air conditioner efficiency, but many homeowners do not fully understand what it means or how to use it when shopping for new equipment. This article explains SEER ratings, the new SEER2 standard, and how to calculate the energy savings from upgrading to a higher-efficiency system.

A heating failure during a Wisconsin winter is a serious situation that requires immediate action. This article covers what to do in the first minutes after your heat goes out, how to keep your family safe while waiting for repairs, how to prevent pipe freezing, and when to call for emergency service.

Wisconsin winters are notoriously dry, and low indoor humidity causes a range of problems from dry skin and static electricity to damage to wood floors and furniture. We explain how whole-home humidifiers work, the different types available, and why they are a worthwhile investment for most Wisconsin homeowners.

Commercial HVAC systems represent a significant investment, and a failure during business hours can be costly in lost productivity, customer discomfort, and emergency repair fees. This article explains the importance of preventive maintenance contracts for commercial properties and what a comprehensive commercial maintenance program should include.

Ductless mini-split systems have grown in popularity as an alternative to traditional central air conditioning. We explain how mini-splits work, their advantages and disadvantages compared to central air, the best applications for ductless systems, and what homeowners should know about installation and operating costs.

While most HVAC maintenance should be performed by a licensed technician, there are several simple tasks homeowners can do themselves to keep their systems running well. This article covers filter changes, outdoor unit cleaning, thermostat battery replacement, vent cleaning, and other safe DIY maintenance tasks.

Many older Wisconsin homes use boiler heating systems, while newer homes typically have forced-air furnaces. Both systems have advantages and disadvantages. This article compares boilers and forced-air systems on comfort, efficiency, maintenance requirements, and cost, helping homeowners understand their options when it is time to replace aging equipment.