Replacing your boiler: what are your options?
Replacing a boiler in 2026? Understand the withdrawn heat-pump rule, check the plans for your home and compare practical options before choosing a system.
How to check CO certification for boiler work
Booking a gas boiler installation or service? Learn what CO certification covers, where to check the company and which details to ask for before the visit.
How to compare boiler quotes properly
Comparing boiler quotes? Check the model, flue, installation work, VAT and optional extras. Jordan explains what to look for before you agree to a price.
A service contract or a one-off visit?
Should you take a boiler maintenance contract or book a one-off service? Compare the service interval, parts cover and breakdown response before deciding.
Moving bathroom pipes without gutting the room
Moving pipes in a bathroom usually works without breaking the whole room open. Which method suits the job, roughly what it costs, and when to bring in a professional.
When old pipes really need replacing
Lead pipes always have to go. With copper, steel or old plastic, the signs decide whether it is urgent or can wait. Here is how to tell where you stand.
Low boiler pressure or a code on the display
Boiler pressure too low or a fault code on the display? What the gauge should read, how to top up with the vulkraan, and when to reset or call an engineer.
A before-winter routine for your boiler
A before-winter routine for your cv-ketel: when it was last serviced, bleeding, pressure, the thermostat programme, frost-proof pipes and a working CO alarm.
Why a radiator stays cold, and what to do about it
One radiator cold, cold at the top or only warm at the bottom? How to bleed it, check the pressure afterwards, free a stuck valve and when balancing helps.
Renting? Who looks after the cv-ketel
Renting in the Netherlands? Who services, repairs and replaces the cv-ketel, which small jobs are yours, and what to do when the landlord doesn't act.
Which thermostat suits your boiler?
Choosing a thermostat? What on/off and modulating (OpenTherm) control mean, clock versus smart, wired or wireless, and what to check on your boiler first.
A leak at home, step by step
Water leak at home? Close the hoofdkraan, keep clear of wet electrics, photograph the damage and tell your insurer. What to do first, and who to call.
The Dutch words on your boiler, quote and invoice
Cv-ketel, combiketel, HR, CW-klasse, vulkraan, voorrijkosten: the Dutch heating words on your boiler, quote or invoice, explained in plain English.
What your boiler's noises are telling you
A ticking, gurgling, banging or whistling boiler? Which sounds are harmless, which you can fix yourself and which need an engineer, explained by Jordan.
Air in your underfloor heating, and how to get it out
Underfloor heating cold in places or gurgling? How to bleed it at the manifold (verdeler), what the pressure does afterwards, and when it needs a flush.
What the expansion vessel does, and how to tell it's failing
Pressure up when hot, down when cold, safety valve dripping, endless topping up? How the expansievat works, how it's checked and when it's replaced.
Water under the boiler: find the source before you panic
Water under your cv-ketel? Switch it off, then find the source: safety valve, condensate pipe, fitting or heat exchanger. What's safe to do and when to call.
Moving your boiler to a better spot
Want the boiler out of the kitchen or up in the attic? What moving it involves, from gas and flue to condensate and permits, and what it costs with Jordan.
What a new boiler really costs
New boiler cost in the Netherlands: what's in the price, Jordan's fixed CW4 and CW5 prices, what pushes it up, repair or replace, and how to compare quotes.
Radiator valve stuck or broken? Here's what to replace
Radiator valve stuck or broken? How to free the pin, when a new head is enough, when the whole valve must go, and where presetting and balancing come in.
Servicing an Intergas boiler, and what its fault codes mean
Kombi Kompakt HRE or Xtreme? What Intergas says about service intervals, pressure and fault codes 1, 4, 5 and 6, and what a service with Jordan involves.
Servicing a Remeha boiler and reading its messages
Avanta, Tzerra or Calenta? What Remeha says about servicing, service messages, the dirt filter and its A, H and E codes, and what Jordan does on a service.
Servicing a Nefit-Bosch boiler, and reading its codes
TrendLine, ProLine or 9700i? What Nefit-Bosch says about servicing, the H service symbol, codes such as 2E 207 and H07, and what Jordan does on a service.
Servicing an ATAG boiler and reading its codes
ATAG boiler servicing and faults in Noord-Holland. What codes 105, 117 and 118 mean, ATAG's service interval, the right pressure and what Jordan does.
Servicing a Vaillant and reading its F-codes
Vaillant boiler servicing and faults in Noord-Holland. F.22, F.28 and F.75 from Vaillant's own code list, the right pressure and what a service involves.
