{"id":2816,"date":"2026-09-29T17:53:12","date_gmt":"2026-09-29T15:53:12","guid":{"rendered":"https:\/\/zepassiv.com\/tools\/"},"modified":"2026-10-28T13:23:22","modified_gmt":"2026-10-28T12:23:22","slug":"tools","status":"publish","type":"page","link":"https:\/\/zepassiv.com\/en\/tools\/","title":{"rendered":"Tools"},"content":{"rendered":"<div id=\"zpt\" class=\"np\" lang=\"en\"><header class=\"hero\"><div class=\"w hx\"><div><p class=\"ey\">Passivhaus tools by Zepassiv<\/p><h1><span class=\"nw\">Engineered by us.<\/span> <span class=\"nw\">Now yours.<\/span><\/h1><p class=\"sub\">Thermal bridges, building fabric, MEP, PHPP and DesignPH: the tools we built for our own design, certification and training work. Learn, document and calculate your projects with them.<\/p><div class=\"cta\"><a class=\"b lime\" href=\"#zpt-all\">Explore the tools \u2192<\/a><a class=\"b ghost\" href=\"#zpt-wl\">Join the waiting list<\/a><\/div><\/div><figure class=\"hopt\" data-h=\"D\"><div class=\"tiles\"><div class=\"tile\"><svg viewbox=\"0 0 52 52\" aria-hidden=\"true\"><path d=\"M8 8h18v20h22v12H8z\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\"\/><path d=\"M12 44c6-14 10-26 30-30\" fill=\"none\" stroke=\"#92cd32\" stroke-width=\"2\"\/><path d=\"M18 44c4-9 8-18 26-22\" fill=\"none\" stroke=\"#36a5d9\" stroke-width=\"2\"\/><\/svg><span>T<\/span><b>Thermal bridges<\/b><\/div><div class=\"tile\"><svg viewbox=\"0 0 52 52\" aria-hidden=\"true\"><rect x=\"10\" y=\"8\" width=\"8\" height=\"36\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\"\/><rect x=\"18\" y=\"8\" width=\"16\" height=\"36\" fill=\"none\" stroke=\"#92cd32\" stroke-width=\"2\"\/><rect x=\"34\" y=\"8\" width=\"6\" height=\"36\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\"\/><path d=\"M18 16h16M18 26h16M18 36h16\" stroke=\"#92cd32\" stroke-width=\"1.2\"\/><\/svg><span>B<\/span><b>Building fabric<\/b><\/div><div class=\"tile\"><svg viewbox=\"0 0 52 52\" aria-hidden=\"true\"><circle cx=\"16\" cy=\"26\" r=\"9\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\"\/><path d=\"M16 17v18M7 26h18\" stroke=\"currentColor\" stroke-width=\"1.2\"\/><path d=\"M25 22h19M25 30h19\" fill=\"none\" stroke=\"#36a5d9\" stroke-width=\"2\"\/><path d=\"M38 18l6 4-6 4M38 26l6 4-6 4\" fill=\"none\" stroke=\"#92cd32\" stroke-width=\"2\"\/><\/svg><span>M<\/span><b>MEP and services<\/b><\/div><div class=\"tile\"><svg viewbox=\"0 0 52 52\" aria-hidden=\"true\"><rect x=\"8\" y=\"10\" width=\"36\" height=\"32\" rx=\"2\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\"\/><path d=\"M8 18h36M8 26h36M8 34h36M20 10v32M32 10v32\" stroke=\"currentColor\" stroke-width=\"1\"\/><rect x=\"32\" y=\"26\" width=\"12\" height=\"8\" fill=\"#92cd32\"\/><\/svg><span>P<\/span><b>PHPP helpers<\/b><\/div><div class=\"tile\"><svg viewbox=\"0 0 52 52\" aria-hidden=\"true\"><path d=\"M26 8l16 9v18l-16 9-16-9V17z\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\"\/><path d=\"M10 17l16 9 16-9M26 26v18\" fill=\"none\" stroke=\"#36a5d9\" stroke-width=\"2\"\/><\/svg><span>D<\/span><b>DesignPH add-ins<\/b><\/div><div class=\"tile\"><svg viewbox=\"0 0 52 52\" aria-hidden=\"true\"><rect x=\"12\" y=\"10\" width=\"28\" height=\"34\" rx=\"2\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\"\/><rect x=\"20\" y=\"6\" width=\"12\" height=\"7\" rx=\"1.5\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\"\/><path d=\"M18 27l5 5 11-11\" fill=\"none\" stroke=\"#92cd32\" stroke-width=\"2.4\"\/><\/svg><span>C<\/span><b>Certification aids<\/b><\/div><\/div><figcaption>Six themes, one set of tools.<\/figcaption><\/figure><\/div><\/header><section class=\"tstrip\"><div class=\"w\"><div><b>Standards<\/b><span>Calculations follow the relevant standards, and every report cites its references.<\/span><\/div><div><b>Privacy<\/b><span>In Learn and Document, your data stays in your browser. Designed for UK and EU GDPR.<\/span><\/div><div><b>Experience<\/b><span>Built from our own work in consultancy, design, testing, certification and training.<\/span><\/div><\/div><\/section><section class=\"s\" id=\"zpt-all\"><div class=\"w\"><p class=\"ey dk\">All tools<\/p><h2>Tools by theme<\/h2><p class=\"lede\">T1 is open now. The others are coming soon: join the waiting list to hear first.<\/p><div class=\"chips\"><button class=\"chip\" data-g=\"all\" aria-pressed=\"true\">All<\/button><button class=\"chip\" data-g=\"T\" aria-pressed=\"false\">T \u00b7 Thermal bridges<\/button><button class=\"chip\" data-g=\"B\" aria-pressed=\"false\">B \u00b7 Building fabric<\/button><button class=\"chip\" data-g=\"M\" aria-pressed=\"false\">M \u00b7 MEP and services<\/button><button class=\"chip\" data-g=\"P\" aria-pressed=\"false\">P \u00b7 PHPP helpers<\/button><button class=\"chip\" data-g=\"D\" aria-pressed=\"false\">D \u00b7 DesignPH add-ins<\/button><button class=\"chip\" data-g=\"C\" aria-pressed=\"false\">C \u00b7 Certification aids<\/button><\/div><div class=\"grp\" data-g=\"T\"><div class=\"gh\"><span class=\"gl\">T<\/span><div><h3>Thermal bridges<\/h3><p>Junctions, window installation and repeated bridges.<\/p><\/div><\/div><div class=\"tg\"><article class=\"tc isop wide\"><div class=\"fimg\"><img decoding=\"async\" class=\"t1o\" alt=\"\" src=\"https:\/\/zepassiv.com\/wp-content\/plugins\/zepassiv-tools-page\/tools-page\/t1-jamb.jpg\" title=\"\"><\/div><div class=\"tcb\"><div class=\"fh\"><span class=\"code sm\">T1<\/span><span class=\"st op\">Open<\/span><\/div><b>Window installation thermal bridges<\/b><p>Report the installation \u03a8 of your windows at head, jamb and sill. Pick the case from published catalogues, compare it with your own detail and download a clear report.<\/p><a class=\"b pri go\" href=\"https:\/\/tools.zepassiv.com\/window-installation\/learn.html\">Take me to the tool \u2192<\/a><\/div><\/article><article class=\"tc\"><div class=\"tcb\"><div class=\"fh\"><span class=\"code sm mute\">T2<\/span><span class=\"st sn\">Coming soon<\/span><\/div><b>Thermal bridge modeller<\/b><p>Draw a junction once and export it to THERM. Get the equivalent U of repeated modules such as studs, brackets and fixings.<\/p><\/div><\/article><article class=\"tc\"><div class=\"tcb\"><div class=\"fh\"><span class=\"code sm mute\">T3<\/span><span class=\"st sn\">Coming soon<\/span><\/div><b>Thermal bridge lengths<\/b><p>Mark the thermal bridges on your model and get the total length per type, with segments grouped and labelled for PHPP.<\/p><\/div><\/article><\/div><\/div><div class=\"grp\" data-g=\"B\"><div class=\"gh\"><span class=\"gl\">B<\/span><div><h3>Building fabric<\/h3><p>Layers, build-ups and surfaces.<\/p><\/div><\/div><div class=\"tg\"><article class=\"tc\"><div class=\"tcb\"><div class=\"fh\"><span class=\"code sm mute\">B1<\/span><span class=\"st sn\">Coming soon<\/span><\/div><b>Equivalent \u03bb of a bridged layer<\/b><p>A frame or fixing through the insulation changes the \u03bb to use in PHPP. Get the equivalent \u03bb, with the ISO 6946 value beside it. Calculate adds the build-up U-value, \u0394U and fRsi.<\/p><\/div><\/article><article class=\"tc\"><div class=\"tcb\"><div class=\"fh\"><span class=\"code sm mute\">B2<\/span><span class=\"st sn\">Coming soon<\/span><\/div><b>Absorptivity and emissivity<\/b><p>Pick the colour or material of an exterior surface and get its absorptivity and emissivity for PHPP, with the PHI cool-colour check.<\/p><\/div><\/article><\/div><\/div><div class=\"grp\" data-g=\"M\"><div class=\"gh\"><span class=\"gl\">M<\/span><div><h3>MEP and services<\/h3><p>Ventilation, heating and hot water design.<\/p><\/div><\/div><div class=\"tg\"><article class=\"tc\"><div class=\"tcb\"><div class=\"fh\"><span class=\"code sm mute\">M1<\/span><span class=\"st sn\">Coming soon<\/span><\/div><b>MVHR design<\/b><p>Place terminals on your plan and get the PHI design flows and an A3 sheet. Add duct speeds, pressure losses and valve settings when you need them.<\/p><\/div><\/article><article class=\"tc\"><div class=\"tcb\"><div class=\"fh\"><span class=\"code sm mute\">M2<\/span><span class=\"st sn\">Coming soon<\/span><\/div><b>Underfloor heating design<\/b><p>Lay out underfloor heating on your plan from a product catalogue and see the output per room.<\/p><\/div><\/article><\/div><\/div><div class=\"grp\" data-g=\"P\"><div class=\"gh\"><span class=\"gl\">P<\/span><div><h3>PHPP helpers<\/h3><p>Inputs and outputs for your PHPP.<\/p><\/div><\/div><div class=\"tg\"><article class=\"tc\"><div class=\"tcb\"><div class=\"fh\"><span class=\"code sm mute\">P1<\/span><span class=\"st sn\">Coming soon<\/span><\/div><b>Isotherm Atlas<\/b><p>The graphic atlas of your Passive House, drawn from its PHPP. A clear set of sheets to explain the design.<\/p><\/div><\/article><\/div><\/div><div class=\"grp\" data-g=\"D\"><div class=\"gh\"><span class=\"gl\">D<\/span><div><h3>DesignPH add-ins<\/h3><p>Reports and drawings from your DesignPH model.<\/p><\/div><\/div><div class=\"tg\"><article class=\"tc\"><div class=\"tcb\"><div class=\"fh\"><span class=\"code sm mute\">D1<\/span><span class=\"st sn\">Coming soon<\/span><\/div><b>Tapping points report<\/b><p>Generate the report of tapping points straight from your DesignPH project.<\/p><\/div><\/article><article class=\"tc\"><div class=\"tcb\"><div class=\"fh\"><span class=\"code sm mute\">D2<\/span><span class=\"st sn\">Coming soon<\/span><\/div><b>DHW documentation<\/b><p>Draw the pipe routes for heating distribution, DHW circulation and individual pipes, and get the lengths per system.<\/p><\/div><\/article><article class=\"tc\"><div class=\"tcb\"><div class=\"fh\"><span class=\"code sm mute\">D3<\/span><span class=\"st sn\">Coming soon<\/span><\/div><b>Vn50 modeller<\/b><p>Model the airtight volume room by room, work out the Vn50 and export it in the room data format.<\/p><\/div><\/article><article class=\"tc\"><div class=\"tcb\"><div class=\"fh\"><span class=\"code sm mute\">D4<\/span><span class=\"st sn\">Coming soon<\/span><\/div><b>TFA check and room names<\/b><p>Compare the TFA with your area schedule and detect room names from PDF drawings.<\/p><\/div><\/article><\/div><\/div><div class=\"grp\" data-g=\"C\"><div class=\"gh\"><span class=\"gl\">C<\/span><div><h3>Certification aids<\/h3><p>Evidence and statements for your certification file.<\/p><\/div><\/div><div class=\"tg\"><article class=\"tc\"><div class=\"tcb\"><div class=\"fh\"><span class=\"code sm mute\">C1<\/span><span class=\"st sn\">Coming soon<\/span><\/div><b>Site evidence<\/b><p>Collect the site evidence an assessor asks for, stage by stage: photos, site visits, window and door checks and handover documents.<\/p><\/div><\/article><article class=\"tc\"><div class=\"tcb\"><div class=\"fh\"><span class=\"code sm mute\">C2<\/span><span class=\"st sn\">Coming soon<\/span><\/div><b>Summer comfort statement<\/b><p>Extract the summer comfort strategy statement from your PHPP data, aligned with the Passivhaus Trust template.<\/p><\/div><\/article><\/div><\/div><\/div><\/section><section class=\"s alt\" id=\"zpt-wl\"><div class=\"w wlg\"><div><p class=\"ey dk\">Waiting list<\/p><h2>Be the first to know<\/h2><p class=\"lede\">Leave your email and we will write when Calculate and new tools open.<\/p><\/div><form class=\"wlf\" data-api=\"https:\/\/zepassiv.com\/wp-json\/zpa\/v1\/interest\" data-lang=\"en\" action=\"\"><label for=\"zpt-em\">Email<\/label><input id=\"zpt-em\" name=\"email\" type=\"email\" required autocomplete=\"email\"><input class=\"hp\" name=\"website\" tabindex=\"-1\" autocomplete=\"off\" aria-hidden=\"true\"><label class=\"cb\"><input type=\"checkbox\" required> <span>I agree to Zepassiv keeping my email to contact me about the tools.<\/span><\/label><button class=\"b pri\" type=\"submit\">Join the waiting list<\/button><p class=\"ok\" hidden>\u2713 Thank you. You are on the list.<\/p><p class=\"err\" hidden>Something went wrong. Please try again or email hello@zepassiv.com.<\/p><input type=\"hidden\" name=\"trp-form-language\" value=\"en\"\/><\/form><\/div><\/section><section class=\"s endrow\"><div class=\"w duo\"><div class=\"qc\"><div><h3>Go beyond the basics<\/h3><p>Learn the method behind the tools in our courses, with the people who built them.<\/p><\/div><a class=\"b line\" href=\"https:\/\/zepassiv.com\/en\/training\/\">See our accredited training \u2192<\/a><\/div><div class=\"qc\"><div><h3>Missing a tool?<\/h3><p>Tell us what takes too much of your time.<\/p><\/div><a class=\"b line\" href=\"mailto:hello@zepassiv.com?subject=Tool%20suggestion\">Suggest a tool \u2192<\/a><\/div><\/div><\/section><\/div>","protected":false},"excerpt":{"rendered":"","protected":false},"author":6,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"pmpro_default_level":"","footnotes":""},"class_list":["post-2816","page","type-page","status-publish","hentry","pmpro-has-access"],"acf":[],"_links":{"self":[{"href":"https:\/\/zepassiv.com\/en\/wp-json\/wp\/v2\/pages\/2816","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/zepassiv.com\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/zepassiv.com\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/zepassiv.com\/en\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/zepassiv.com\/en\/wp-json\/wp\/v2\/comments?post=2816"}],"version-history":[{"count":7,"href":"https:\/\/zepassiv.com\/en\/wp-json\/wp\/v2\/pages\/2816\/revisions"}],"predecessor-version":[{"id":3000,"href":"https:\/\/zepassiv.com\/en\/wp-json\/wp\/v2\/pages\/2816\/revisions\/3000"}],"wp:attachment":[{"href":"https:\/\/zepassiv.com\/en\/wp-json\/wp\/v2\/media?parent=2816"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}