Altherm vs Vantage Windows & Doors:Which is more popular in New Zealand?
In October 2026, Altherm had more branded searches than Vantage Windows & Doors among window and door companies in New Zealand. Altherm had about 710 branded searches, while Vantage Windows & Doors had 140. Altherm made up 19% of all window and door company searches we track, and Vantage Windows & Doors accounted for 3.8%. When we asked ChatGPT and Google AI Overviews about window and door companies, Altherm and Vantage Windows & Doors each appeared in three of the five answers. Vantage Windows & Doors was mentioned before Altherm in two out of three answers.
Who do people search for more?
Altherm, about 5 searches for every 1 for Vantage Windows & Doors
Who does AI mention more?
Both were mentioned in 3 of 5 answers.
Who does AI recommend more?
Vantage Windows & Doors, named ahead of Altherm in 2 of 3 answers
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Top window and door companies in ChatGPT and Google AI Overviews
In three ChatGPT questions and two Google AI Overviews, Altherm and Vantage Windows & Doors were each mentioned in three out of five: in two of the three ChatGPT answers and in one of the two Google AI Overviews. Vantage Windows & Doors was listed before Altherm in two out of three answers.
Most recommended by AI
Brands get a higher ranking if they are mentioned earlier in the answers.
Mentioned by AI
Each dot is one answer, filled in when that answer mentions the brand.
- Altherm3 of 5Named in 2 of 3 ChatGPT answersNamed in 1 of 2 Google answers
- Vantage Windows & Doors3 of 5Named in 2 of 3 ChatGPT answersNamed in 1 of 2 Google answers
Nulook2 of 5Named in 1 of 3 ChatGPT answersNamed in 1 of 2 Google answers
First Windows2 of 5Named in 0 of 3 ChatGPT answersNamed in 2 of 2 Google answers
Rylock1 of 5Named in 1 of 3 ChatGPT answersNamed in 0 of 2 Google answers
APL Window Solutions1 of 5Named in 1 of 3 ChatGPT answersNamed in 0 of 2 Google answers
Nebulite0 of 5Named in 0 of 3 ChatGPT answersNamed in 0 of 2 Google answers
See every answer about window and door companies
5 answers
Asked ChatGPT
“Which window and door company should I hire in New Zealand?”
Asked ChatGPT
“What are the best window and door companies in New Zealand?”
Asked ChatGPT
“What's the best window and door company in New Zealand for a new build home?”
Searched Google, AI Overview
“aluminium windows nz”
Searched Google, AI Overview
“new windows nz”
Not named in any answer:
Brands are shown in the order each answer named them. The survey took place in New Zealand on October 21, 2026.
Is Altherm or Vantage Windows & Doors more popular in search?
This chart shows how often people search Google for Altherm and Vantage Windows & Doors by name. Each line represents a brand's share of searches for all seven window and door companies we track, month by month, from searches in New Zealand.
Share of searches by month for Altherm, Vantage Windows & Doors. The figures are in the table below the chart.
View monthly share of searches table
| Month | Nulook | Rylock | Altherm | APL Window Solutions | First Windows | Vantage Windows & Doors | Nebulite |
|---|---|---|---|---|---|---|---|
| Nov 2025 | 25.1% | 20.6% | 21.8% | 15.2% | 10.1% | 4% | 3.3% |
| Dec 2025 | 24.6% | 18.3% | 19.9% | 15.3% | 15.9% | 3.7% | 2.3% |
| Jan 2026 | 23.4% | 18.9% | 23% | 13.4% | 14.1% | 4.1% | 3.1% |
| Feb 2026 | 23.1% | 20.3% | 21.5% | 16.3% | 11.8% | 4% | 3.1% |
| Mar 2026 | 23.2% | 20.4% | 20.2% | 16.5% | 12.8% | 4.6% | 2.4% |
| Apr 2026 | 25.4% | 22.3% | 16.6% | 17.3% | 10.2% | 5% | 3.1% |
| May 2026 | 23.1% | 16.7% | 21.2% | 18.8% | 11.8% | 4.9% | 3.5% |
| Jun 2026 | 22.8% | 17% | 20.7% | 19.8% | 12.4% | 4% | 3.3% |
| Jul 2026 | 24.6% | 17.6% | 20.6% | 16.3% | 12.6% | 5.3% | 3% |
| Aug 2026 | 23.1% | 20.2% | 21.4% | 15.3% | 12.5% | 4% | 3.5% |
| Sep 2026 | 25.7% | 18.4% | 20.7% | 17.1% | 11.3% | 3.7% | 3.1% |
| Oct 2026 | 23.3% | 22% | 19% | 17.4% | 11% | 3.8% | 3.5% |
How has branded search for Altherm and Vantage Windows & Doors changed in New Zealand over the last 12 months?
3 findings
- Altherm was ahead of Vantage Windows & Doors in every measured month of the 12 months ending October 2026.
- Across the 12 months ending October 2026, Altherm’s share of searches among window and door companies in New Zealand moved from 21.8% to 19%, and its estimated monthly branded searches moved from 930 to 710.
- Across the 12 months ending October 2026, Vantage Windows & Doors’ share of searches among window and door companies in New Zealand moved from 4% to 3.8%, and its estimated monthly branded searches moved from 170 to 140.
How did search popularity change for New Zealand window and door companies in October 2026?
3 changes
In October 2026, Rylock overtook Altherm to rank 2nd among window and door companies in New Zealand, with 22% of the searches.
In October 2026, Altherm lost share of searches among window and door companies in New Zealand, from 20.7% to 19%.
Estimated monthly branded searches for Vantage Windows & Doors in New Zealand fell 17.6% over 12 measured months, from 170 to 140 in October 2026.
How are Altherm’s and Vantage Windows & Doors’ branded searches counted?
8 search terms
Brandwave collects information about searches that people make online using Altherm’s and Vantage Windows & Doors’ names. When viewed over time, estimated search volumes for these branded terms can be used to understand whether interest in the brands is growing, holding steady, or fading.
Altherm
7 branded search terms
- altherm
- altherm aluminium
- altherm doors
- altherm double glazing
- altherm joinery
- altherm west
- altherm windows
Vantage Windows & Doors
1 branded search term
- vantage windows & doors
Other head-to-heads among window and door companies
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