Keystone
For UK heat pump installers

The support line that knows your install.

Instant technical support on WhatsApp and phone. Job-aware, format-flexible, fully logged.

24/7Evenings, weekends, bank holidays
All modelsVaillant, Daikin, Mitsubishi, Samsung, Grant …
Every stageSurvey · Install · Commission · Handover
9:41
The Problem

Heat pumps don't break between nine and five.

01

OEM support lines run 9 to 5.

Most installs happen evenings and weekends. You hit a fault, you ring the manufacturer — no one picks up. The homeowner's waiting in the cold.

02

Trade transitions need a guide across every stage.

Engineers moving from plumbing or electrical into heat pumps know the basics. Commissioning, refrigerant work and handover aren't covered by prior experience.

03

Scaling means standards and audit, without more paperwork.

Growing companies need consistent quality from every engineer and a clean MCS audit trail — not another form to fill in at the end of a 10-hour shift.

What Keystone does

Job-aware support.
Every format. Zero delay.

Job-specific answers

Knows the unit, the property, the docs you uploaded. Not a generic chatbot reading from the manual.

Text, photo, diagram, video

Replies in the format that actually helps — annotated photos, short clips, wiring diagrams. Not walls of text.

Every stage, Survey to Handover

Design, install, commissioning, customer demo. Coverage doesn't stop at the heat pump itself.

Your SOPs, your standards

Upload your install procedures and quality checks. Every engineer gets answers in line with your company's standards.

Automatic audit trail

Every query, answer and resolution timestamped against the job. Export for QA Audit, warranty or contract review.

24/7, all major models

Vaillant, Daikin, Mitsubishi, Samsung, Grant, NIBE, Worcester. Evenings, weekends, bank holidays. No SLA gaps.

How it works

Set up in two minutes. Live by the next call-out.

01

Create a job

Address, unit model, system type. Upload the survey, MI sheet and any install docs — Keystone reads them all.

02

Add your installers

Drop in a WhatsApp number and phone line. They're live instantly — no app to install, no login, no training.

03

Installer calls or messages

They get the right answer in the right format — voice, text, photo, video. Every interaction logged against the job.

Manager Dashboard

Everything visible
from one place.

  • Create and brief jobsAddress, model, docs — all in one place, ready before the van leaves the depot.
  • Assign installersMatch engineers to jobs by skill, region or accreditation.
  • Monitor live progressSee which jobs are at survey, install, commissioning or handover at a glance.
  • Review every queryRead or play back every support interaction across your team.
  • Export audit trailsOne click for MCS, warranty submission or contract reviews.
app.keystone.support / jobs / 247
12 Manor Lane, York YO1 8RT
JOB #247 · Created 04 Mar 2026
Commissioning
Unit
Vaillant aroTHERM plusVWL 75/6 A · 7 kW
System
Buffer + cylinder170L Mixergy · UFH + rads
Installer assigned
DM
Dan MorleyMCS HP · Lead engineer
on site
Documents · 4
Heat-loss survey.pdf 1.4 MB
System schematic.pdf 820 KB
Vaillant aroTHERM MI.pdf 3.1 MB
Stage
Survey
Design
Install
Commission
Handover

Try Keystone on your next project.

We're running a pilot with a small group of UK heat pump installation companies this summer. Two minutes to set up. No commitment.

Limited to 12 companies Summer 2026 cohort UK only