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Claim This BusinessAbout A Plus HVAC LLC
A Plus HVAC LLC operates as a licensed heating and cooling contractor serving Woodstock, Illinois and surrounding communities. With a current rating of 4.6 stars gathered from 10 customer reviews, the company provides residential HVAC installation, repair, and maintenance services throughout McHenry County. Technicians maintain round-the-clock availability for emergency calls, ensuring homeowners can access support whenever heating or cooling systems fail.
What distinguishes this contractor is the consistent mention of technician Karl across multiple five-star reviews. Customers specifically note his diagnostic precision, thorough approach to equipment issues, and clean work habits. The company handles both new system installations and targeted repairs, including solutions for humidity control problems that other contractors missed. They also address complex repair scenarios involving propane heating conversion kits.
Reviewer Marion Crooks describes how Karl resolved a persistent high humidity problem before installing a new air conditioning system. Another customer, Rich Basham, notes Karl's thoroughness during a furnace and AC installation, mentioning the technician maintained a clean worksite throughout the project. Catherine's review specifically praises Karl's knowledge and personable demeanor during her new HVAC system installation.
What Customers Say
7 of 8 visible reviews award 5 stars, with customers consistently praising technician Karl's knowledge, professionalism, and thorough approach. The single 1-star review describes a conversion kit installation issue where the homeowner felt the work was incomplete. All positive reviewers would recommend this contractor to others.
Working Hours
| Sunday | Open 24 hours |
| Monday | Open 24 hours |
| Tuesday | Open 24 hours |
| Wednesday | Open 24 hours |
| ThursdayToday | Open 24 hours |
| Friday | Open 24 hours |
| Saturday | Open 24 hours |
Services
HVAC System Installation
Complete heating and cooling system installation for residential properties, including new furnace and air conditioning units.
Emergency HVAC Repair
Round-the-clock repair services for heating and cooling system failures, available seven days a week.
AC Repair & Maintenance
Air conditioning diagnostics, repair, and preventive maintenance services to maintain system efficiency.
Heating Repair & Maintenance
Furnace troubleshooting, repair, and tune-up services including propane heating system conversions.
Humidity Control Solutions
Diagnosis and resolution of indoor humidity problems, with one reviewer noting Karl fixed a persistent humidity issue.
System Diagnostics
Detailed equipment inspections to identify repair needs, with technician knowledge praised across positive reviews.