RES Devon passed its annual MCS audit with zero non-conformities and cut estimate time from 2-3 hours to 10 minutes. The team now runs a single workflow across heat pumps, solar PV, battery storage, biomass and MVHR from initial contact through to handover.

Alter Eco tripled installs from 15-20 to 50-60 heat pumps a year within 12 months. With Spruce, heat loss surveys take 30-45 minutes instead of half a day, and proposals now match the quality of the installs their referral business depends on.

After 15 years running a bespoke in-house Excel system, WDS moved to Spruce and grew survey volume by 75%. Estimates that used to take an hour now take 10 minutes, and new starters become productive in two weeks rather than months.

Active Heating tripled installs from one to three heat pumps a week and cut survey-to-proposal time from a day to a couple of hours. With Spruce, the team handles more enquiries, runs estimates from the website, and gets proposals out the same day.

Guscott Heating shifted from 95% gas boilers in 2020 to 60% heat pumps today, while the team grew from two to 15. With Spruce, faster heat losses removed the admin cap that was holding the heat pump side back.

Swift Renewables scaled from 10 to 100 heat pump installs a year and grew from four engineers to 30, all without growing the office at the same rate. Spruce now handles the admin work that used to need a full-time role, and proposals come together in 20 minutes.

In 2025, MCS published a complete restructure of the certification scheme: new documents, new terminology, new relationships, and a fundamentally different model for how audits work. The headline from MCS is: less paperwork, more focus on quality. The reality is more nuanced. This guide breaks down what's actually changed, and what it means for you.

Humphrey & Crockett spent a day per heat loss survey with large spreadsheets, leading to 2-week quotes. With Spruce, they now quote in days and win more work

Taggas cut survey time from 4 hours to 1 and doubled designs from 5 to 10 per week. With Spruce, they save time and focus more on customers.

EnergyMyWay cut enquiry-to-proposal time in half with Spruce, helping their 27-person team win more work and grow 40% in two years. Learn more.

AAC Group cut heat pump admin from 6 hours to 2 with Spruce, moving from 5 to 20 jobs a week and sending same-day proposals after surveys. Learn more.

Elite Services Group uses Spruce to manage 100 heat pump jobs a year without extra back office staff, keeping a 48-hour quote turnaround. Learn more.

Wiltshire Energy increased survey capacity 10x with Spruce, growing revenue 45% in a year while scaling from 3 surveys a week to 3 a day. Read more.

Aventus Eco is a Scottish heat pump and solar installer run by Sean Hogan. Aventus now manage 100+ jobs simultaneously while maintaining a 90% referral rate, all without back office staff.

Aventus Eco manages 100+ jobs and 5–7 daily enquiries with Spruce, maintaining a 90% referral rate without needing back office staff. Read more.

JLN Plumbing and Heating cut admin time by 50% and scaled heat pump delivery end-to-end, achieving their strongest year in two decades with Spruce. Read more.

Blakemore Plumbing cut admin time from 22 to 6 hours per heat pump job and now uses Spruce proposals as a competitive advantage to win more work. Read more.

In this article, we explain why oversizing heat pumps happens frequently and how this leads to higher costs and reduced efficiency. Learn more today.

As heat pumps increasingly take off in the UK, installers have a unique opportunity to grow their businesses. We've put together some ideas on how to take advantage of this opportunity.

To stand a chance of hitting 600,000 heat pump installs by 2028, we need to prioritise installers' needs, concerns and overlooked challenges.

Spruce was founded to address the often-overlooked challenges faced by heat pump installers in the UK. In this article, we talk about why it's important to address these issues.