1. Check for Proper Accreditation
Look for engineers registered with Gas Safe (for gas work) or OFTEC (for oil). This is a legal requirement and ensures they’re certified to work safely.
2. Ask About Experience and Specialisms
Some engineers specialise in specific systems like underfloor heating or commercial boilers. Choose someone experienced with the type of work you need.
3. Read Reviews and Testimonials
Check Google, Trustpilot, or Checkatrade for consistent feedback. Look for how they handle both praise and complaints.
4. Get Written Quotes (Not Estimates)
A professional company will provide a clear, itemised quote, so you understand exactly what’s included.
5. Check Insurance and Warranties
Ensure they have public liability insurance, and ask what warranties are offered on both labour and parts.
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6. Ask About Aftercare and Support
Will they provide maintenance? Do they offer emergency callouts or service plans? Good companies think beyond the install.
7. Assess Communication and Professionalism
Are they responsive, polite, and helpful? The way they handle your enquiry often reflects their overall service.
8. Look for Clear Terms and Payment Structure
Avoid vague agreements. Ask when payments are due and what happens if there’s a delay or issue.
9. Check Turnaround Times and Availability
A reliable company will give a realistic timeline — not just the fastest one. Quality work takes time.
10. Trust Your Gut
If something feels off — rushed answers, reluctance to explain, or unclear credentials — it’s okay to walk away.
