- Ep Gas
- 0141 5701706 - 25 Rannoch Drive, Glasgow, Uk, G61 2JJ
- Gas Man, The
- 0141 4342652 - 962 Crow Rd Nth, Glasgow, G13 1JF
- Gasline
- 0141 3342067 - 147 Crow Road, Glasgow, G11 7SJ
- Hannah & Howie Ltd
- 01236 737414 - 26 Tollpark Road, Wardpark East, Cumbernauld, Glasgow, G68 0LW
- Harper Gas Services
- 01505 340344 - 18 Craighead Road, Bishopton, Renfrewshire, PA7 5DT
- Independent Quality Assurance
- 0141 8405256 - 101 Abercorn St, Paisley, Renfrewshire, PA3 4AT
- Alternagas
- 01389 726797 - 9 Castle Street, Dumbarton, Dunbartonshire, G82 1QS
- Assured Heating Ltd
- 01698 849051 - 13 Ashley Grove, Bellshill, Lanarkshire, ML4 3PL
- Environmental & Gas Monitoring
- 01563 820444 - Unit 5 Barrmill Rd, Kilmarnock, KA4 8HH
- Gas Solutions
- 01698 383377 - Solutions Ho Hazelwood, Wishaw, Lanarkshire, ML2 8XZ
- D Maclean Heating
- 01631 564220 - 7 Angus Terrace, Oban, Argyll And Bute, PA34 4EG
- Quality Gas Services (Gourock)
- 01475 634777 - 9 Gleneagles Drive, Gourock, Renfrewshire, PA19 1HX
- J D Gas Services
- 0141 7752007 - Dean Park, Washington Road, Kirkintilloch, Glasgow, Lanarkshire, G66 1DP
- O'neil Gas Services
- 01292 619799 - 55 Green Street, Ayr, Ayrshire, KA8 8BQ
- Gastex
- 0141 8844208 - 39 Braids Crcl, Paisley, PA2 6HS
- Alba Gas Services Ltd.
- 0141 5614610 - 74 Fauldshead Rd., Renfrew, Scotland, PA4 0RU
- Electric Central Heating
- 0141 9440440 - Unit 51, Dalsetter Avenue, Glasgow, G15 8TE
- M D Heating Ltd
- 0141 6361093 - 28 Westwood Road, Glasgow, Lanarkshire, G43 1DS
- H Dorby Service Engineers
- 01563 524310 - 48 Mclelland Drive, Kilmarnock, Ayrshire, KA1 1SE
- E.p.r Heating Specialists Ltd
- 01698 749800 - 750b Old Edinburgh Rd, Glasgow, Lanark, G71 6LB
- Bourne Gas Services
- 0845 6432120 - Knocksculloch, Girvan, KA26 9PZ
- Scotgas Services
- 07546 501232 - 2 Fearnan Place, Greenock, Inverclyde, PA16 9LZ
- J Wallace Plumbing and Heating
- 07860 565402 - 35 Mallard Crescent, Greenock, PA16 7AY
- Westscotplumbers
- 08712 347918 - Rozelle Ave, Glasgow, Lanarkshire, G77 6YS