Altherm vs Rylock:Which is more popular in New Zealand?
In October 2026, Rylock had more branded searches than Altherm among window and door companies in New Zealand. Rylock had about 820 branded searches, while Altherm had 710. Rylock made up 22% of all window and door company searches we track, and Altherm accounted for 19%. When we asked ChatGPT and Google AI Overviews about window and door companies, Altherm appeared in three of the five answers and Rylock in one. Altherm was mentioned before Rylock in every answer that named either.
Who do people search for more?
Rylock, about 15% more searches than Altherm
Who does AI mention more?
Altherm, mentioned in 3 of 5 answers, Rylock in 1
Who does AI recommend more?
Altherm, named ahead of Rylock in 2 of 2 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 was mentioned in three out of five: in two of the three ChatGPT answers and in one of the two Google AI Overviews. Rylock was mentioned in one out of five: in one of the three ChatGPT answers, but not in either of the two Google AI Overviews. Altherm was listed before Rylock in every answer that named either.
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 Rylock more popular in search?
This chart shows how often people search Google for Altherm and Rylock 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 Rylock, Altherm. 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 Rylock changed in New Zealand over the last 12 months?
3 findings
- The lead changed hands 3 times in the 12 months ending October 2026: Rylock took it in March 2026, Altherm took it in May 2026, Rylock took it in 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, Rylock’s share of searches among window and door companies in New Zealand moved from 20.6% to 22%, and its estimated monthly branded searches moved from 880 to 820.
How did search popularity change for New Zealand window and door companies in October 2026?
2 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%.
How are Altherm’s and Rylock’s branded searches counted?
12 search terms
Brandwave collects information about searches that people make online using Altherm’s and Rylock’s 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.
Other head-to-heads among window and door companies
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