7 window installers ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Spencer: Northwest Glass, LLC, CR Score 82/100; 4.3★ from 42 Google reviews.
Best for emergencies (open 24/7): R&G Exteriors, LLC, posts 24/7 hours; ranked #3 of 7.
Most-reviewed: All Around Exteriors, LLC - Spirit Lake, 34 Google reviews at 5.0★, the most of 7 ranked after Northwest Glass, LLC; ranked #2.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
7 Spencer window installers are ranked here by CR Score, from 8 published factors. 1 is open 24/7 and 1 open Saturdays, based on posted hours. The median Google rating is 5.0★ across 7 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Northwest Glass, LLC | 82 | 4.3★ (42) | Spencer | — | Overall |
| 2 | All Around Exteriors, LLC - Spirit Lake | 81 | 5.0★ (34) | Spirit Lake, 18 mi away | — | Most reviews |
| 3 | R&G Exteriors, LLC | 75 | 5.0★ (4) | Spencer | 24/7 | Emergencies |
| 4 | Screenbuilders | 72 | 4.3★ (13) | Cherokee, 36 mi away | — | — |
| 5 | Meyer Home Improvement | 70 | 5.0★ (5) | Spencer | — | — |
| 6 | JB Contracting, LLC | 67 | 5.0★ (5) | Spirit Lake, 19 mi away | — | — |
| 7 | ABC Seamless | 61 | 2.8★ (5) | Worthington, 40 mi away | — | — |
Ordered by CR Score, a 0–100 score from 8 published factors. Paid placement never changes the order.
Ranked #1 because of its Google rating and review volume: 4.3★ from 42 Google reviews, the most Google reviews on this list (42).
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Spirit Lake, 18 mi away
Ranked #2 because of its Google rating and review volume: 5.0★ from 34 Google reviews, 34 Google reviews.
Based on 5 of 8 factors; credentials, recency and availability not yet collected.
Based in Spencer
Ranked #3 because of its Google rating and availability: 5.0★ from 4 Google reviews, open 24/7.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Cherokee, 36 mi away
Ranked #4 because of its Google rating and trade focus: 4.3★ from 13 Google reviews, listed on Google as “Window installation service”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Spencer
Ranked #5 because of its Google rating and trade focus: 5.0★ from 5 Google reviews, listed on Google as “Siding contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Spirit Lake, 19 mi away
Ranked #6 because of its Google rating and trade focus: 5.0★ from 5 Google reviews, listed on Google as “Home builder”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Worthington, 40 mi away
Ranked #7 because of its Google rating and trade focus: 2.8★ from 5 Google reviews, listed on Google as “Roofing contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Typical prices in USD, adjusted for Iowa with a published regional index. Each row names its basis and month.
| Job | Low | Typical | High | Basis | Checked |
|---|---|---|---|---|---|
| Window replacement | $3,550 | $7,580 | $12,220 | Per project (several windows): typical range of customer-reported projects. US national range × 1.03 West North Central factor (2025 Cost vs. Value Report) | October 2026 |
We scored 7 Spencer window installers on 8 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. Unknown factors are left out of the score, 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 Spencer data |
|---|---|---|---|
| Reputation | 35% | Bayesian-adjusted Google star rating | Measured |
| Credentials | 15% | Active state license 0.6, bond 0.2, workers’ comp 0.2 | Not yet collected |
| Review volume | 10% | log10(reviews + 1) against the list maximum | Measured |
| Recency | 10% | Share of reviews from the last 12 months | Not yet collected |
| Availability | 10% | Weekly open hours, Saturday, Sunday, 24/7 or same-day | Measured |
| Trade focus | 10% | Google main category 1.0, business name 0.7, additional category 0.5 | Measured |
| Proximity | 5% | 1.0 when based in the city, falling to 0 at the trade’s radius | Measured |
| Completeness | 5% | Website, photos, description, hours, claimed profile (0.2 each) | Measured |