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Buying advice 03/11/2026 INVENTĀRS
How to choose a heating pump
Heating and water pumps covers circulation, water-supply and other types. If you choose by “biggest W”, you risk buying a JET where you needed Evosta/PICO. Choice starts with the job. When you need circulation · flow and head · how to size power. Circulation for heating It moves the heat carrier around the radiator circuit. Examples: DAB Evosta 2 40-70/130 DN15, Evosta 2 DN25, Evosta 2 180 DN25, Evosta 2 SAN, Wilo Atmos PICO 25/1-4, PICO 25/1-6, DUCA GEX-C 25-80-130. Radiators nearby: radiator · valves. Water supply / JET DAB JET 82 M — water delivery, not a radiator pump. Do not con..
Buying advice 03/11/2026 INVENTĀRS
How to choose heating and hot water
Heating and hot water in the catalogue often looks like “all warmth on one shelf”. In reality there are at least three jobs: heat the room, heat water at the tap and bathroom comfort (towel rail). If you buy “something warm” without a job, you risk getting a boiler where you needed a radiator — or the other way round. This guide is a map. Go deeper via the links. We skip prices here — type, size and connection matter more. Two systems + one comfort layer JobWhat you chooseGuide Room heatRadiator + valves (+ often a circulation pump)radiator · valves · pump Hot waterStorage or instan..
Buying advice 03/11/2026 INVENTĀRS
How to size a heating pump
Selection order: (1) job circulation vs water, (2) DN connection, (3) flow/head from the project or old pump label, (4) model. Parameters: flow/head. Practical examples DN15 vs DN25: Evosta DN15 vs Evosta DN25. Power/curve: Evosta 3, PICO 1-4 vs PICO 1-6. What not to do “I’ll take the biggest so it is enough.” Ignoring installation length 130/180 mm. Mixing a water-supply pump with circulation — explanation. main guide · Pumps · heating map.
Guides 03/11/2026 INVENTĀRS
What pump flow and head mean
Flow (m³/h or l/h) — how much heat carrier the pump can move. Head (m) — against pressure losses in the circuit (pipes, radiators, valves). Read both with the curve, not the “biggest number”. Examples: Evosta 130, Evosta 180, PICO 1-4, PICO 1-6, DUCA 25-80-130. Why “with reserve” hurts An oversized pump can cause valve noise and unnecessary energy use. Better: project / old label / hydraulic calculation. sizing · when you need it · main guide · Pumps.
Guides 03/11/2026 INVENTĀRS
Circulation pump — when you need it
A circulation pump keeps flow in the heating circuit. It is not a garden water pump and not automatically hot-water recirculation to the tap. Basics: how to choose a pump. When you need it Closed radiator systems with forced circulation (typical modern projects). When radiators are far / the system is large and gravity “does not pull”. When replacing an old circulation pump 1:1 by DN and curve. Examples: DAB Evosta 2, Evosta DN25, Evosta SAN, Wilo Atmos PICO, PICO 1-6. What not to confuse Borehole / JET water supply. Hot-water recirculation to the mixer (another job — read th..
Buying advice 03/11/2026 INVENTĀRS
How to choose a bath and shower
Baths and showers starts with the decision: bath or shower. Then — the water “head” (mixer/system) and water “feet” (drain/trap). Without both the project does not “stick”. Mixers: mixer guide. Drain: trap or linear channel, drainage. Shower system and hoses In a shower you often need a kit: thermostat/mixer + rail/head + hose. Examples: Hansgrohe Vernis Shape, Vernis Blend. Hoses: Remer 2000 mm, Grohe Relexa. Shower mixer example: Jika Talas Trendy for shower. Bath You need a bath mixer with diverter and a bath trap. Example: Jika Talas bath mixer. Support/acoustic kits (e.g. Kaldewe..
Comparisons 03/11/2026 INVENTĀRS
Bath or shower
The choice is lifestyle + square metres, not “fashion colour”. Basics: bath and shower. Comparison ShowerBath SpaceSmaller zoneLarger “box” Daily useFast, less waterLonger, more water HardwareSystem + channel — Vernis Shape, Talas for showerMixer + trap — Talas for bath WhenSmall bathroom, daily showerFamily, relaxation, children Combination If space allows — a bath with a shower kit. In budget and waterproofing that is a bigger project. Baths and showers · mixer · drain.
Buying advice 03/11/2026 INVENTĀRS
How to choose valves
Valves protect and control the water line. Choice starts with the job, not brass shine. Basics: plumbing map. Comparison: ball or pressure-reducing. Job map JobTypeExample Stop backflowCheck valveGenebre 1/2″, with flap, 3/4″ Catch debris mechanicallyStrainer / filter fitting1/2″, 3/4″ Shut the line for serviceBall / shut-off valveSee DN and thread on the card For room heating control see radiator valves, not “any valve” from this category. Diameter and thread 1/2″ is not “almost” 3/4″. Read the existing line. Filtration deeper: water filter. Typical mistakes Mixing a..
Buying advice 03/11/2026 INVENTĀRS
Bathroom accessories — how to complete a set
Bathroom accessories are the last layer after mixer and basin. If you start with accessories, colour often fails to match the mixer. Order: plumbing → then accessories. Completion logic Choose mixer/basin finish (chrome, black…). Take one series in the same finish. Start with functions: soap, towel, toilet paper, tumbler. Gedy series examples Fuji: soap dish. Tonga: black, chrome. Eros: chrome, black, liquid soap. Mixer before accessories: guide. Basin: basin. Towel rail (if needed): towel rail. Typical mistakes “Chrome from one, black from another” — looks random. Forget..
Guides 03/11/2026 INVENTĀRS
Seals and plumbing consumables
Before replacing the whole mixer, check the seal and feed. Seals and mounting is cheap “first aid” if the size is right. Fibre and rubber MaterialSize examples Fibre3/8″, 1/2″, 3/4″, 1″ Rubber3/8″, 1/2″, 3/4″, 1″ When a seal is enough Drip at the joint, not from the body. Old, cracked seal after dismantling. If it leaks from the body or the cartridge “plays” — see mixer replacement and cartridge. Typical mistakes Taking “almost the same” diameter. Overtightening — the seal deforms. Using unsuitable material for hot water. Seals · mixer · plumbing.