diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 9a4c6ea..7245337 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -108,6 +108,21 @@ jobs:
       run: |
         node -v
         npm -v
+  windows-with-arch:
+    runs-on: windows-latest
+    steps:
+    - uses: actions/checkout@master
+    - uses: ./
+      with:
+        node-version: "10.0.0"
+        node-mirror: https://nodejs.org/download/release/
+        node-arch: "32"
+    - name: Check
+      run: |
+        node -v
+        npm -v
+        if ((node -e 'console.log(process.arch)') -ne 'ia32') { exit 1 }
+
   # windows-nvmrc:
   #   runs-on: windows-latest
   #   steps:
diff --git a/README.md b/README.md
index 7953793..6499d31 100644
--- a/README.md
+++ b/README.md
@@ -12,6 +12,11 @@ The node.js version to install and use, according to nvm. Uses the version speci
 
 The node.js mirror to use, e.g. `https://nodejs.org/download/v8-canary/` for node on V8 lkgr.
 
+### node-arch (Windows only)
+
+The architecture of node.js to use. Defaults to system arch if omitted. More info about nvm-windows arch modifier [here](https://github.com/coreybutler/nvm-windows#usage).
+Note that the action will reject to run on both GNU/Linux and macOS if node-arch is provided.
+
 ## Example usage:
 
 ```yaml
diff --git a/action.yml b/action.yml
index c6ec2f4..f627769 100644
--- a/action.yml
+++ b/action.yml
@@ -6,8 +6,11 @@ inputs:
     description: The node.js version to use according to nvm. Uses the version specified in .nvmrc if omitted.
     default: ""
   node-mirror:
-    description: The node.js mirror to use
+    description: The node.js mirror to use.
     default: https://nodejs.org/dist/
+  node-arch:
+    description: The architecture of node.js to use (Only supported by nvm-windows). Defaults to system arch if omitted.
+    default: ""
 branding:
   icon: download
   color: green
diff --git a/index.js b/index.js
index ee55278..3f896e8 100644
--- a/index.js
+++ b/index.js
@@ -25,15 +25,20 @@ async function resolveVersion(version, mirror) {
 (async () => {
   let mirror = core.getInput("node-mirror") || "https://nodejs.org/dist/";
   let version = await resolveVersion(core.getInput("node-version"), mirror);
+  let arch = core.getInput("node-arch") || "";
   if (process.platform == "win32") {
-    runScript("powershell", ".\\install.ps1", version, mirror);
+    runScript("powershell", ".\\install.ps1", version, mirror, arch);
   } else {
+    if (arch) throw Error("Invalid input parameter: node-arch");
     runScript("bash", "install.sh", version, mirror);
   }
-})();
+})().catch (error => {
+  core.setFailed(error.message);
+});
 
-function runScript(shell, script, version, mirror) {
-  const child = child_process.spawn(shell, [ script, version, mirror ], { cwd: __dirname });
+// arch only applies to Windows platform, so it will throw on both GNU/Linux and macOS when provided
+function runScript(shell, script, version, mirror, arch) {
+  const child = child_process.spawn(shell, [ script, version, mirror, arch ], { cwd: __dirname });
   const stdout = [];
   child.stdout.on("data", out => {
     stdout.push(out);
diff --git a/install.ps1 b/install.ps1
index eb9b416..6a0207c 100644
--- a/install.ps1
+++ b/install.ps1
@@ -5,11 +5,11 @@ $env:NVM_SYMLINK="$NVM_HOME\nodejs"
 $env:PATH=$env:PATH + ";$NVM_HOME"
 Invoke-WebRequest -Uri https://github.com/coreybutler/nvm-windows/releases/download/1.1.7/nvm-noinstall.zip -OutFile nvm.zip
 Expand-Archive nvm.zip -DestinationPath "$NVM_HOME"
-New-Item -Path "$NVM_HOME\settings.txt" -ItemType File 
+New-Item -Path "$NVM_HOME\settings.txt" -ItemType File
 nvm.exe root $NVM_HOME
 nvm.exe node_mirror $args[1]
-nvm.exe install $args[0]
-nvm.exe use $args[0]
+nvm.exe install $args[0] $args[2]
+nvm.exe use $args[0] $args[2]
 echo "SETUP_NODE_NVM_NVM: $NVM_HOME"
 echo "SETUP_NODE_NVM_NODE: $NVM_HOME\nodejs\node.exe"
 echo "SETUP_NODE_NVM_NPM: $NVM_HOME\nodejs\npm.cmd"