Heating Appliances & Spares Ltd T/A HASL


Your Innovative Design Concept.


Listening, Understanding and Facilitating.


Comprehensive Engineered Solutions.


Continuous Product Service Support.


The SpiroTop is a reliable automatic air vent that proves its worth time and time again, and not only when preventing air inclusions in an installation. When an installation is drained, the SpiroTop ensures that the aeration is fast and reliable. Call us on 01506 438083 to order your supply

Our Service

  • CIBSE & RIBA Accredited CPDs

    We presently have a number of technical presentations plus CIBSE or RIBA accredited CPD’s available and would be keen to commence a program at your earliest convenience. These presentations are generally held at your offices with us providing the catering for either breakfast, lunch or afternoon tea. We trust these training courses shall prove to be of interest and please forward your requests to [email protected]
  • Service & Commissioning

    In order to maximise product lifespan and maintain efficient and effective operation, it is essential that some of our products are commissioned and that most, if not all, are regularly maintained. Our Commissioning and Service engineers can provide initial product Commissioning along with Service visits in line with the Manufacturer's recommendations in order to keep the installed products and systems in good working order.
  • Site Survey's

    We believe that most problems can be eliminated if issues and requirements are discussed at early stages of a project. Attending either site or your office will allow us to guide you through product options, suitability and arrive at a solution which works for all. On site we can take into account site specific dimensions, restrictions and environmental factors and then provide you with detailed product selection or system proposals prior to you starting work on site. We are also able to provide post installation surveys, design checks and client training upon request.
  • Architectural Product Installations

    Our experienced team of fitters will happily install any of our Architectural product range along with associated controls equipment where required. We can coordinate and work alongside the various trades involved to ensure the end product is delivered on time, on budget and to your complete satisfaction.


  • Ongoing water monitoring in carbon steel systems should be included as part of any specification and design. Modern devices offer greater visibility of the closed system with early warning detection of potential issues, especially corrosion - all this with greater flexibility and lower costs than before.
    Antony Corbett, Product Manager for Geberit Mapress & Mepla multilayer pipe
  • Water monitoring should not be considered simply as a retrofit once a system has gone awry, but properly included as part of the initial design.
    Eur Ing Prof Tim Dwyer CEng FIMechE FCIBSE FASHRAE, Visiting Professor of Building Services Systems UCL Institute for Environmental Design and Engineering
  • The Risycor is proving invaluable in existing systems that we have installed and are providing excellent graphical information on both corrosion and temperatures. An additional benefit on maintenance contracts is that we are seeing when systems are being shut down or unknowingly interrupted. Excellent and hopefully we will continue to retrofit.
    John Blake, Senior Engineer for Midlothian Council
  • In the hidden depths of closed heating & cooling pipework systems lies an unforeseen relentless attacker which is corrosion. The installation of a Risycor unit provides early warning signs and even aid the prevention of premature failure that all Clients & Building Owners fear.
    Dawn Armstrong, Principal Engineer for Hulley & Kirkwood
  • Design Managers should be targeted with the BIM tool, highlighting the time saved and the data available.      
    Stephen Agnew, M&E CAD Engineer / Co-ordinator at Crown House Technologies
  • SPC BIM software is a GREAT TOOL and how objects in REVIT should be created and made available!      
    Chris Dickson, CAD Draughtsman for Laing O'Rourke
  • As well as SPC’s technical expertise and excellent support with what is an especially challenging project, what set SPC apart from the field was its embrace of BIM.     The intelligent Revit files provided by SPC benefited not only ourselves during the design and co-ordination process, but has the added benefit for the client when they take ownership of this fantastic facility.        
    Andrew Wightman, Procurement Manager for BBESL
  • HASL have always given me fantastic products and service!        
    Ewan Smith, Contracts Manager, NG Bailey
  • We have always found that the service we get from HASL is second to none, from quotation, through design development to order and beyond, the quality of support offered is paramount to our own success. …HASL has never let us down!      
    Ian Dowdeswell, Regional Manager, Nordan
  • Always excellent service. Always helpful during design stage. Work on site to programme with no defects. Will you consider this supplier in the future . . . . yes.
    Alasdair H Ross, Director
  • The blowers work really well and do solve our problem . . . . . . . .Thanks for your support and it is good to see a company actively seeking to improve its product.
    Neil Dunn, Technip UK Ltd, Technical Supervisor
  • I can certainly say that as a client we were extremely satisfied with the efforts made to supply a quality product designed to minimise installation issues and that will survive the rigors of the intake environment thus enabling the site to function even when the external conditions are challenging.
    Bruce MacKinnon, NHS Greater Glasgow Estates Manager
  • I knew from experience that Spirotech would be able to help us, but the actual results even exceeded my expectations.
    Ian de Vries, BAT Utilities Manager