Thielmann Heating, Cooling & Plumbing
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Based on review analysis
1 concern
Pricing fairness dimension scored 0/100 despite 4.9/5 Google rating with 1849 reviews—significant discrepancy suggests possible hidden costs, upselling, or billing disputes not reflected in these 5 sampled reviews
Trust Score: 0/100 · Based on 1849 reviews
Solid pickOur Verdict
#3 of 6 in New Berlin, WI
- Emergency and same-day calls
- Complex installs and remodels
- Water heater install/repair
- You're highly price-sensitive
Hire if: You need a plumber who actually shows up when scheduled
Hire if: You need high-quality work that holds up over time
Caution if: You need rock-bottom prices with zero flexibility on the quote
Caution if: You need airtight scheduling and guaranteed arrival times
How they score across what matters
Based on 5 reviews analyzed. Click a row for the quote that best illustrates the score.
What they do well (and don’t)
Green means reviews confirm they’re good at it. Red means reviewers flag issues. Gray means no reviews talk about it yet.
What 1849 Reviews Tell Us
Emergency Response
Emergency and same-day calls
What To Watch Out For
Not enough data to identify weaknesses—all 5 available reviews are 5-star ratings
Pricing fairness dimension scored 0/100 despite 4.9/5 Google rating with 1849 reviews—significant discrepancy suggests possible hidden costs, upselling, or billing disputes not reflected in these 5 sampled reviews
Communication
All 5 reviews praise technician courtesy, knowledge, and communication—customers consistently mention detailed explanations of work and follow-up support
Strong post-service support: technicians provide manuals, explain adjustments, and invite customers to call with concerns
Customer reviews
Reviews from Google, Yelp & more
We had Todd H from Thielman come out to service our HVAC system, and we were thrilled with his work. Todd was courteous, knowledgeable, and he tremendously helped us figure out solutions to our HVAC system we were not aware of. There's nothing better than having good people do good work when you can't do it yourself, and Todd from Thielman is one of those people. I highly recommend Thielman, both for their installation and service expertise in residential HVAC. If I could give them more than 5 stars, I would.
Benjamin G was here in Fri. Jan. 16 arriving on time as scheduled. He replaced my old furnace (manufactured in 1988). All the galvanized housing and PVC pipe was modified to fit. The old furnace was much larger than the new one. I am very pleased with how this all went down. I would highly recommend Benjamin G. Clean up went well, they did a great job!
Extremely helpful in my decision to buy a new furnace with Thielmann. Stood by me while I was talking to previous furnace installer .. therefore making my decision much easier. A real pleasure doing business with Thielmann. Also for the installation of the furnace and exhaust system, Jeff D and his crew were so very efficient, like clock work .. everyone had their job to do. So great job!! Especially just before the below zero weather coming. That's no time to be without heat.
It was a pleasure having Kyle service our hot water heater today. I was not clear on the proper procedure flushing this system. Kyle explained the required steps and answered all of my questions. He really had a great attitude and he is a huge asset to your Team.
Benjamin was on time, polite, explained everything is new, how to adjust water heater and thermostat. Noted the manuals that came with boiler and water heater. Reminded me to call if I have any questions or concerns. Thank you Happy holidays!✌️
Business details
Service area
Based in New Berlin. Serves 19 nearby cities within 20 miles:
Thielmann Heating, Cooling & Plumbing