111 HVAC contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Norwalk: Schaal Plumbing, Heating and Cooling, CR Score 65/100; 4.9★ from 8,128 Google reviews; open 24/7.
Best for emergencies (open 24/7): Holt Plumbing & Heating, Inc., posts 24/7 hours; ranked #2 of 111.
Most-reviewed: Golden Rule Plumbing, Heating, Cooling & Electrical, 9,136 Google reviews at 4.9★, the most of 111 ranked; ranked #12.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
111 Norwalk HVAC contractors are ranked here by CR Score, from ten published factors. 49 are open 24/7, 64 open Saturdays and 63 open Sundays, based on posted hours. The median Google rating is 4.8★ across 111 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Schaal Plumbing, Heating and Cooling | 65 | 4.9★ (8,128) | Johnston, 13 mi away | 24/7 | Overall |
| 2 | Holt Plumbing & Heating, Inc. | 64 | 4.8★ (3,343) | Des Moines, 7 mi away | 24/7 | Emergencies |
| 3 | Bell Brothers Heating, Cooling & Plumbing | 64 | 4.9★ (3,734) | Des Moines, 10 mi away | 24/7 | — |
| 4 | Lozier Heating & Cooling | 64 | 4.9★ (1,545) | West Des Moines, 6 mi away | 24/7 | — |
| 5 | Service Legends Heating & Cooling, Plumbing & Electrical | 64 | 4.9★ (5,373) | Des Moines, 15 mi away | 24/7 | — |
| 6 | Greens Appliance, Heating & Cooling | 64 | 4.9★ (3,935) | Grimes, 14 mi away | 24/7 | — |
| 7 | Des Moines Heating & Cooling, LLC | 63 | 4.9★ (668) | Des Moines, 4 mi away | 24/7 | — |
| 8 | Des Moines Comfort | 63 | 5.0★ (1,014) | Des Moines, 10 mi away | 24/7 | — |
| 9 | Lenz Heating & Cooling | 63 | 4.9★ (1,802) | Urbandale, 11 mi away | 24/7 | — |
| 10 | Kohles & Bach Heating & Cooling | 63 | 4.9★ (2,360) | Johnston, 13 mi away | 24/7 | — |
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Scores below: based on 8 of 10 factors; credentials and recency not yet collected. Hatched segments mark factors we don't have yet.
Ranked #1 because of its Google rating and trade focus: 4.9★ from 8,128 Google reviews, listed on Google as “HVAC contractor”.
Based in Des Moines, 7 mi away
Ranked #2 because of its Google rating and trade focus: 4.8★ from 3,343 Google reviews, listed on Google as “HVAC contractor”.
Based in Des Moines, 10 mi away
Ranked #3 because of its Google rating and trade focus: 4.9★ from 3,734 Google reviews, listed on Google as “HVAC contractor”.
Based in West Des Moines, 6 mi away
Ranked #4 because of its Google rating and trade focus: 4.9★ from 1,545 Google reviews, listed on Google as “HVAC contractor”.
Based in Des Moines, 15 mi away
Ranked #5 because of its Google rating and trade focus: 4.9★ from 5,373 Google reviews, listed on Google as “HVAC contractor”.
Based in Grimes, 14 mi away
Ranked #6 because of its Google rating and trade focus: 4.9★ from 3,935 Google reviews, listed on Google as “HVAC contractor”.
Based in Des Moines, 4 mi away
Ranked #7 because of its Google rating and trade focus: 4.9★ from 668 Google reviews, listed on Google as “HVAC contractor”.
Based in Des Moines, 10 mi away
Ranked #8 because of its Google rating and trade focus: 5.0★ from 1,014 Google reviews, listed on Google as “HVAC contractor”.
Based in Urbandale, 11 mi away
Ranked #9 because of its Google rating and trade focus: 4.9★ from 1,802 Google reviews, listed on Google as “HVAC contractor”.
Based in Johnston, 13 mi away
Ranked #10 because of its Google rating and trade focus: 4.9★ from 2,360 Google reviews, listed on Google as “HVAC contractor”.
Based in Des Moines, 10 mi away
Ranked #11 because of its Google rating and trade focus: 5.0★ from 983 Google reviews, listed on Google as “HVAC contractor”.
Based in Grimes, 16 mi away
Ranked #12 because of its Google rating and review volume: 4.9★ from 9,136 Google reviews, the most in Norwalk.
Based in Des Moines, 10 mi away
Ranked #13 because of its Google rating and trade focus: 4.9★ from 830 Google reviews, listed on Google as “HVAC contractor”.
Based in Des Moines, 12 mi away
Ranked #14 because of its Google rating and trade focus: 5.0★ from 566 Google reviews, listed on Google as “HVAC contractor”.
Based in Des Moines, 10 mi away
Ranked #15 because of its Google rating and trade focus: 4.7★ from 447 Google reviews, listed on Google as “HVAC contractor”.
Based in Ankeny, 18 mi away
Ranked #16 because of its Google rating and trade focus: 4.9★ from 670 Google reviews, listed on Google as “HVAC contractor”.
Based in Des Moines, 13 mi away
Ranked #17 because of its Google rating and trade focus: 4.8★ from 308 Google reviews, listed on Google as “HVAC contractor”.
Based in Grimes, 14 mi away
Ranked #18 because of its Google rating and trade focus: 4.8★ from 356 Google reviews, listed on Google as “HVAC contractor”.
Based in Grimes, 14 mi away
Ranked #19 because of its Google rating and trade focus: 4.9★ from 246 Google reviews, listed on Google as “HVAC contractor”.
Based in Waukee, 12 mi away
Ranked #20 because of its Google rating and trade focus: 5.0★ from 119 Google reviews, listed on Google as “HVAC contractor”.
Based in Des Moines, 14 mi away
Ranked #21 because of its Google rating and trade focus: 4.9★ from 145 Google reviews, listed on Google as “HVAC contractor”.
Based in Clive, 18 mi away
Ranked #22 because of its Google rating and trade focus: 4.7★ from 507 Google reviews, listed on Google as “HVAC contractor”.
Based in Ankeny, 13 mi away
Ranked #23 because of its Google rating and trade focus: 5.0★ from 186 Google reviews, listed on Google as “HVAC contractor”.
Based in Des Moines, 14 mi away
Ranked #24 because of its Google rating and trade focus: 5.0★ from 79 Google reviews, listed on Google as “HVAC contractor”.
Based in Waukee, 12 mi away
Ranked #25 because of its Google rating and trade focus: 4.7★ from 129 Google reviews, listed on Google as “HVAC contractor”.
#1 to #25 are shown in full above. Here are #26 to #50, in CR Score order; each links to its profile. We publish the top 50 of 111 ranked HVAC contractors here; the rest are on their profiles.
20 more HVAC contractors within 25 mi that we can't rank yet: too few reviews, or a trade we couldn't confirm. Listed A to Z.
| Business | Google rating | Distance |
|---|---|---|
| Budget Heating & Cooling | 5.0★ (3) | 15 mi |
| Contractors Heating | 5.0★ (1) | 9 mi |
| Cool Off HVAC | 5 mi | |
| Corn States Metal Fabricators | 7 mi | |
| Cozy Home Heating & Cooling | 5.0★ (1) | 9 mi |
| FHR Heating And Cooling | 5.0★ (2) | 13 mi |
| Golden Rule Plumbing | In Norwalk | |
| H-H Inc of Iowa | 7 mi | |
| Marick Mechanical | 3.7★ (24) | 10 mi |
| Maurer Mechanical | 7 mi | |
| Midwest Star Repairs | 5.0★ (1) | 7 mi |
| Porter Family Heating & Cooling | 8 mi | |
| Rays Plumbing & Heating & AC | 4 mi | |
| Reed Mechanical Inc | 7 mi | |
| Resource Services Inc | 4.2★ (6) | 14 mi |
| Sims Plumbing Co | 4.0★ (4) | 17 mi |
| Trane - Heating & Cooling Services | 1.0★ (1) | 11 mi |
| United Heating & Air Conditioning | 3.5★ (81) | 12 mi |
| Whipp It Up Services LLC | 5.0★ (5) | 7 mi |
| Wilson's HVAC & More | 5.0★ (1) | 12 mi |
National price ranges in USD, not adjusted for Norwalk. Each row names its basis and the month we checked it.
| Job | Low | Typical | High | Basis | Checked |
|---|---|---|---|---|---|
| AC replacement | $3,887 | $5,978 | $8,073 | Per system, installed (unit plus labor); typical range of customer-reported jobs. US national range | October 2026 |
| Furnace replacement | $2,823 | $4,814 | $6,896 | Per system, installed; typical range of customer-reported jobs. US national range | October 2026 |
In Iowa, Iowa Plumbing and Mechanical Systems Board (Department of Inspections, Appeals and Licensing) licenses Mechanical (HVAC, refrigeration, hydronic) licenses.
No chip usually means we have not matched a state record yet. Check the lookup yourself before you hire.
Guide checked October 2026. How we verify licenses
In Iowa, furnace and heat pump calls peak in the coldest winter weeks and AC calls in summer heat waves. Spring and fall are the easiest times to book maintenance or a replacement.
We scored 111 Norwalk HVAC contractors on ten factors, weighted as shown. A business is ranked when its trade is confirmed and it has 3 or more Google reviews or a claimed profile. A business with no Google reviews scores zero on rating, review volume and recency. Other unknown factors are left out, not counted as zero. Scores last refreshed October 22, 2026.
Paid placement never changes a rank or score. Featured businesses are paid, labelled, limited to 3 and shown above the ranking, outside it.
| Factor | Weight | Computed from | In Norwalk data |
|---|---|---|---|
| Reputation | 25% | Google star rating, adjusted for how many reviews back it | Measured |
| Credentials | 15% | Active state license, bond and workers’ comp on file | Not yet collected |
| Review volume | 10% | Number of Google reviews, compared with the most-reviewed business on the list | Measured |
| Recency | 5% | Share of reviews from the last 12 months | Not yet collected |
| Availability | 5% | Weekly open hours, Saturday, Sunday, 24/7 or same-day | Measured |
| Trade focus | 10% | How clearly the business does this trade (its Google category and name) | Measured |
| Proximity | 5% | Based in the city scores highest, less the farther away it is | Measured |
| Claimed profile | 10% | The business has claimed its ContractorsRanked profile (free or paid earn the same) | Measured |
| Partnered | 5% | The business links to ContractorsRanked from its own website with our badge, checked periodically | Measured |
| ContractorsRanked reviews | 10% | Verified customer reviews collected by ContractorsRanked: their rating and how many there are | Measured |