---
title: "Testeral LLC"
description: "Testeral LLC says it has been in business for 30 years and describes its approach as solutions that fit each client's requirements. A 2025 customer wrote t"
doc_version: "2026-10-15"
last_updated: "2026-10-15"
---

# Testeral LLC

**Trade:** Windows / Siding / Gutters · **Address:** 1345 E Putnam Ave, Old Greenwich, CT 06870 · **Phone:** (203) 625-1919 · **Website:** https://testeralus.com/ · **Languages:** English

**Rating: 3.4/5** (low confidence) — from 2 reviews across 5 sources.

## The honest read

Testeral LLC says it has been in business for 30 years and describes its approach as solutions that fit each client's requirements.

A 2025 customer wrote that you can trust them with any project with windows and called its windows, doors and facades high quality. A 2025 customer described a whole team moving the process through, a private project site the customer could consult for information, and a team that communicated at every junction.

**Strengths:**
- Windows, doors, facades — a 2025 customer called them high quality
- Private project site — a 2025 customer could consult it for information
- Team communication — a 2025 customer said they communicated at every junction

## Claims & citations

Every claim below is backed by real evidence rows — uncited claims are dropped in code before publication.

- The company says it has been in business for 30 years _(confidence: medium)_
  - [Official Website](https://testeralus.com) — “Self-reported 30 years in business”
- A 2025 customer called its windows, doors and facades high quality _(confidence: medium)_
  - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChdDSUhNMG9nS0VJQ0FnTUN3LU1PR19nRRAB!2m1!1s0x0:0x194198e959e34b7d!3m1!1s2@1:CIHM0ogKEICAgMCw-MOG_gE%7C%7C?hl=en-US) — “5★ Great company!!!! You can totally trust them with any project with windows, they have high quality windows, doors and facades. Profession…”
- A 2025 customer said the team set up a private project site and communicated at every junction _(confidence: medium)_
  - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChdDSUhNMG9nS0VJQ0FnTUNROWNXTl93RRAB!2m1!1s0x0:0x194198e959e34b7d!3m1!1s2@1:CIHM0ogKEICAgMCQ9cWN_wE%7C%7C?hl=en-US) — “5★ Great experience from start to finish. There is whole team of people moving the process through. They set up private project site that I …”
- 5 stars from 6 Google ratings _(confidence: medium)_
  - [Google](https://www.google.com/maps/search/?api=1&query=Testeral%20LLC&query_place_id=ChIJfxL6OTWZwokRfUvjWemYQRk) — “Google: 5★ from 6 ratings”
- Specializes in Windows / Siding / Gutters _(confidence: medium)_
  - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sChdDSUhNMG9nS0VJQ0FnTUN3LU1PR19nRRAB!2m1!1s0x0:0x194198e959e34b7d!3m1!1s2@1:CIHM0ogKEICAgMCw-MOG_gE%7C%7C?hl=en-US) — “5★ Great company!!!! You can totally trust them with any project with windows, they have high quality windows, doors and facades. Profession…”

## License

Status: **not_found** — verified against the official CT state registry, never self-reported.
Re-check at the official registry: https://www.elicense.ct.gov/Lookup/LicenseLookup.aspx

## Sources

- [Google](https://www.google.com/maps/search/?api=1&query=Testeral%20LLC&query_place_id=ChIJfxL6OTWZwokRfUvjWemYQRk): 5.0★ from 6 ratings
- [Google Reviews](https://www.google.com/maps/search/?api=1&query=Testeral%20LLC&query_place_id=ChIJfxL6OTWZwokRfUvjWemYQRk): Listed on this source
- [Official Website](https://testeralus.com): 30 yrs in business · Self-reported profile and service details
- [Local News](https://network.procore.com/p/testeral-llc-old-greenwich): Listed on this source
- [Procore Construction Network](https://network.procore.com/p/testeral-llc-old-greenwich): Listed on this source

## Recent reviews

- **5/5 · Google Reviews · Mira · 2025-03-16**: Great company!!!! You can totally trust them with any project with windows, they have high quality windows, doors and facades. Professional, good people in first place. Highly recommend 👏
- **5/5 · Google Reviews · milan jovanovic · 2025-03-06**: Great experience from start to finish. There is whole team of people moving the process through. They set up private project site that I could consult and get information. And best part is the team communicated with me at every junction.

---

Data freshness: last scanned 2026-10-13T23:46:29.988Z.
Cite as: Testeral LLC — Tavlee (https://tavlee.com/contractor/testeral-llc-old-greenwich)
Source: https://tavlee.com/contractor/testeral-llc-old-greenwich

## Sitemap

[Full site index](https://tavlee.com/sitemap.md)